* make types within `generate_solution_type` macro explicit

Closes #8444.

Just changes the parsing logic for that macro; does not change any
emitted code. The associated types associated with the macro now
require explicit, keyword-style declaration.

**Old**:

```rust
sp_npos_elections::generate_solution_type!(
	#[compact]
	pub struct TestCompact::<VoterIndex, TargetIndex, PerU16>(16)
);
```

**New**:

```rust
sp_npos_elections::generate_solution_type!(
	#[compact]
	pub struct TestCompact::<VoterIndex = VoterIndex, CandidateIndex = TargetIndex, Accuracy = PerU16>(16)
);
```

* un-ignore doc-tests

* use new form in bin/node/runtime/

* rename CandidateIndex -> TargetIndex

* add tests demonstrating some potential compile failures

* [pallet-staking] Refund unused weight for `payout_stakers` 

fixes #8428

* Use periods in comments

* cargo run --release --features=runtime-benchmarks --manifest-path=bin/node/cli/Cargo.toml -- benchmark --chain=dev --steps=50 --repeat=20 --pallet=pallet_staking --extrinsic=* --execution=wasm --wasm-execution=compiled --heap-pages=4096 --output=./frame/staking/src/weights.rs --template=./.maintain/frame-weight-template.hbs

* Address Shawn's Feedback

* Assert monotomic weights && improve test note

* Remove stray new line

* debug_assert payout_count <= max

* Only track payouts to nominators; not validators

* Trivial comment update

Co-authored-by: Parity Benchmarking Bot <[email protected]>

* Use `async_trait` in sc-consensus-slots

This makes the code a little bit easier to read and also expresses that
there can always only be one call at a time to `on_slot`.

* slots: remove mutex around BlockImport in SlotWorker

Co-authored-by: André Silva <[email protected]>

* Reservable, Transferrable Fungible(s), plus adapters.

* Repot into new dir

* Imbalances for Fungibles

* Repot and balanced fungible.

* Clean up names and bridge-over Imbalanced.

* Repot frame_support::trait. Finally.

* Make build.

* Docs

* Good errors

* Fix tests. Implement fungible::Inspect for Balances.

* Implement additional traits for Balances.

* Revert UI test "fixes"

* Fix UI error

* Fix UI test

* Fixes

* Update lock

* Grumbles

* Grumbles

* Fixes

Co-authored-by: Bastian Köcher <[email protected]>

* WIP convert sudo pallet to attribute macros

* Fix up tests and migrate mock

* Fix up genesis build

* Migrate doc comment example

* Update frame/sudo/src/lib.rs

Co-authored-by: Guillaume Thiolliere <[email protected]>

* Update frame/sudo/src/lib.rs

Co-authored-by: Guillaume Thiolliere <[email protected]>

* Update frame/sudo/src/lib.rs

Co-authored-by: Guillaume Thiolliere <[email protected]>

* Update frame/sudo/src/lib.rs

Co-authored-by: Guillaume Thiolliere <[email protected]>

* Allow unused metadata call_functions

Co-authored-by: Guillaume Thiolliere <[email protected]>

* Change companion check order

Apparently if the pr isn't approved it counts as not mergable. However,
this is rahter confusing. To fix this, we just change the order.

* Move exit

* upgrade pallet atomic swap

* fix doc

* Upgrade test runner to use latest libp2p

* Update test-utils/test-runner/Cargo.toml

Co-authored-by: Pierre Krieger <[email protected]>

* Update Cargo.lock

Co-authored-by: Pierre Krieger <[email protected]>

* Base features and traits.

* pallet and unsigned phase

* Undo bad formattings.

* some formatting cleanup.

* Small self-cleanup.

* Make it all build

* self-review

* Some doc tests.

* Some changes from other PR

* Fix session test

* Update Cargo.lock

* Update frame/election-provider-multi-phase/src/lib.rs

Co-authored-by: Guillaume Thiolliere <[email protected]>

* Some review comments

* Rename + make encode/decode

* Do an assert as well, just in case.

* Fix build

* Update frame/election-provider-multi-phase/src/unsigned.rs

Co-authored-by: Guillaume Thiolliere <[email protected]>

* Las comment

* fix staking fuzzer.

* cargo run --release --features=runtime-benchmarks --manifest-path=bin/node/cli/Cargo.toml -- benchmark --chain=dev --steps=50 --repeat=20 --pallet=pallet_election_provider_multi_phase --extrinsic=* --execution=wasm --wasm-execution=compiled --heap-pages=4096 --output=./frame/election-provider-multi-phase/src/weights.rs --template=./.maintain/frame-weight-template.hbs

* Add one last layer of feasibility check as well.

* Last fixes to benchmarks

* Some more docs.

* cargo run --release --features=runtime-benchmarks --manifest-path=bin/node/cli/Cargo.toml -- benchmark --chain=dev --steps=50 --repeat=20 --pallet=pallet_election_provider_multi_phase --extrinsic=* --execution=wasm --wasm-execution=compiled --heap-pages=4096 --output=./frame/election-provider-multi-phase/src/weights.rs --template=./.maintain/frame-weight-template.hbs

* cargo run --release --features=runtime-benchmarks --manifest-path=bin/node/cli/Cargo.toml -- benchmark --chain=dev --steps=50 --repeat=20 --pallet=pallet_election_provider_multi_phase --extrinsic=* --execution=wasm --wasm-execution=compiled --heap-pages=4096 --output=./frame/election-provider-multi-phase/src/weights.rs --template=./.maintain/frame-weight-template.hbs

* Some nits

* It all works

* Some self cleanup

* Update frame/staking/src/lib.rs

Co-authored-by: Peter Goodspeed-Niklaus <[email protected]>

* remove most todos.

* Round of self-review.

* Fix migration

* clean macro

* Revert wrong merge

* Make the number of nominations configurable

* Self reivew

* renmae.

Co-authored-by: Shawn Tabrizi <[email protected]>
Co-authored-by: Guillaume Thiolliere <[email protected]>
Co-authored-by: Parity Benchmarking Bot <[email protected]>
Co-authored-by: Peter Goodspeed-Niklaus <[email protected]>

* Update to libp2p-0.36

* Some more Cargo.lock updates.

* Check `unreserve` and `transfer` returnvalues in debug code

fixes #8106

* few more

Co-authored-by: Shawn Tabrizi <[email protected]>

* Migrate pallet-vesting to pallet attribute macro.

* Update metadata type alias.

* Replace 'Module' with 'Pallet' in benchmarking.

* Trigger CI.

* Make candidate intake in society configurable

* Update frame/society/src/lib.rs

* fix fix

Fixes for better understanding and reading to developers. Added exact outputs and specific word names.

Note!
 - Couldn't merge the approved previous pull request found at https://github.com/paritytech/substrate/pull/8409 which is the same as this one, that I proposed earlier on.

* Migrate pallet-utility to pallet attribute macro.

* Replace 'Module' with 'Pallet' in benchmarking.

* grandpa: tests: add peers with authority role

* grandpa: tests: manually wake-up poll_fn future

* contracts: Remove types and storage from the public interface

* contracts: Remove current_schedule() getter

* contracts: Improve documentation

* Update README.md

* Fix integration test

* span in hooks

* add span for dispatchable

* Update frame/support/src/lib.rs

* Update frame/support/src/lib.rs

Co-authored-by: David <[email protected]>

Co-authored-by: Shawn Tabrizi <[email protected]>
Co-authored-by: David <[email protected]>

* Allow contract callable functions to specify the module

* Add new version of `seal_random`

* Fix overlong lines

* Fix benchmarking code

* Update README.md

* Replace Module by Pallet

* make builder generic to allow using different hash types

* expose "cache", "block_number" and "modules" as cli options for live state

* Change Builder to be generic over Block instead of Hash
add rpc method to get hash from block number
allow passing of block numbers and hashes

* fix live tests

* fix formatting in utils/frame/remote-externalities/src/lib.rs

Co-authored-by: Kian Paimani <[email protected]>

* change cli to only accept block hashes
break up lines that were too long
use starts_with instead of match s.get
use unwrap_or_default instead of unwrap_or(Vec::new())

* improve error message

* fix indentation

* replace Block with sp_runtime::testing::Block

* Move cache test out of remote-test feature tests
Add cache file (contains only "Proxy" module) for local test

* simplify match expression to and_then

Co-authored-by: Kian Paimani <[email protected]>

* Combine the two cfg attributes into one

Co-authored-by: David <[email protected]>

* Restrict visibility of test_prelude use statements to crate level

* Fix usage of and_then

* Rename cache to snapshot

* Remove fully qualified path for Debug

* Refine naming. snapshot to state_snapshot

* Remove unnecessary comment

Co-authored-by: Kian Paimani <[email protected]>

Co-authored-by: Kian Paimani <[email protected]>
Co-authored-by: David <[email protected]>

* Fungibles trait and impl for Assets pallet

* Comment & whitespace

* Fixes

* Fix up CI/CD for the new labels.

* New labels.

* Fix labels

* Fix labels

* Whitespace

* Bump impl version.

* Fix accidental change

* Fixes

* Questionable fix.

* Better benchmark

* Fix up CI/CD for the new labels.

* New labels.

* Fix labels

* Fix labels

* Fix accidental change

* Refactor a bit NotifsHandler::poll

* Avoid some spurious wake-ups

* Only allocate slots for the relevant peer set

* Do a pre-check before calling has_free_outgoing_slot

* Oops, fix infinite loop

* Rename GenericProto to Notifications

* Small comment fix

* Base features and traits.

* pallet and unsigned phase

* Undo bad formattings.

* some formatting cleanup.

* Small self-cleanup.

* Make it all build

* self-review

* Some doc tests.

* Some changes from other PR

* Fix session test

* Update Cargo.lock

* Update frame/election-provider-multi-phase/src/lib.rs

Co-authored-by: Guillaume Thiolliere <[email protected]>

* Some review comments

* Rename + make encode/decode

* Do an assert as well, just in case.

* Fix build

* Update frame/election-provider-multi-phase/src/unsigned.rs

Co-authored-by: Guillaume Thiolliere <[email protected]>

* Las comment

* fix staking fuzzer.

* cargo run --release --features=runtime-benchmarks --manifest-path=bin/node/cli/Cargo.toml -- benchmark --chain=dev --steps=50 --repeat=20 --pallet=pallet_election_provider_multi_phase --extrinsic=* --execution=wasm --wasm-execution=compiled --heap-pages=4096 --output=./frame/election-provider-multi-phase/src/weights.rs --template=./.maintain/frame-weight-template.hbs

* Add one last layer of feasibility check as well.

* Last fixes to benchmarks

* Some more docs.

* cargo run --release --features=runtime-benchmarks --manifest-path=bin/node/cli/Cargo.toml -- benchmark --chain=dev --steps=50 --repeat=20 --pallet=pallet_election_provider_multi_phase --extrinsic=* --execution=wasm --wasm-execution=compiled --heap-pages=4096 --output=./frame/election-provider-multi-phase/src/weights.rs --template=./.maintain/frame-weight-template.hbs

* cargo run --release --features=runtime-benchmarks --manifest-path=bin/node/cli/Cargo.toml -- benchmark --chain=dev --steps=50 --repeat=20 --pallet=pallet_election_provider_multi_phase --extrinsic=* --execution=wasm --wasm-execution=compiled --heap-pages=4096 --output=./frame/election-provider-multi-phase/src/weights.rs --template=./.maintain/frame-weight-template.hbs

* Some nits

* It all works

* Some self cleanup

* Update frame/staking/src/lib.rs

Co-authored-by: Peter Goodspeed-Niklaus <[email protected]>

* remove most todos.

* Round of self-review.

* Fix migration

* clean macro

* Revert wrong merge

* remove fuzzer stuff.

* Self review

* Update frame/staking/src/lib.rs

Co-authored-by: Guillaume Thiolliere <[email protected]>

* review comments

* add logs

* Add tests to demonstrate the capacity of the snapshot.

* Replace upgrade

* Last touches

* Fix benchmakrs

* cargo run --release --features=runtime-benchmarks --manifest-path=bin/node/cli/Cargo.toml -- benchmark --chain=dev --steps=50 --repeat=20 --pallet=pallet_staking --extrinsic=* --execution=wasm --wasm-execution=compiled --heap-pages=4096 --output=./frame/staking/src/weights.rs --template=./.maintain/frame-weight-template.hbs

* cargo run --release --features=runtime-benchmarks --manifest-path=bin/node/cli/Cargo.toml -- benchmark --chain=dev --steps=50 --repeat=20 --pallet=pallet_election_provider_multi_phase --extrinsic=* --execution=wasm --wasm-execution=compiled --heap-pages=4096 --output=./frame/election-provider-multi-phase/src/weights.rs --template=./.maintain/frame-weight-template.hbs

* remove unused stuff

* Fix tests.

Co-authored-by: Shawn Tabrizi <[email protected]>
Co-authored-by: Guillaume Thiolliere <[email protected]>
Co-authored-by: Parity Benchmarking Bot <[email protected]>
Co-authored-by: Peter Goodspeed-Niklaus <[email protected]>