Referenda and Conviction Voting pallets (#10195)

* Initial draft of new referendum state machine.

* Docs

* Fixes

* Fixes

* Add conviction-voting pallet

* Basic build

* Building

* Some TODOs

* Tests building

* Add missing file

* Basic lifecycle test

* Add couple of tests

* Another test

* More tests

* Fixes

* Fixes

* Formatting

* Fixes

* Tests

* Fixes

* Fixes

* More tests

* Formatting

* First few benchmarks

* First few benchmarks

* Defered queue servicing

* More testing

* Benchmarks

* Fiddly benchmark

* Final nudge benchmarks

* Formatting

* Formatting

* Finished up benchmarks

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

* Events finished

* Missing file

* No GenesisConfig for Referenda

* Formatting

* Docs

* Docs

* Docs

* Per-class conviction voting

* New test & mock utils

* More tests

* Tests

* Tests finished 🎉



* Benchmarking stuff

* Fixes

* Test harness

* Test harness

* Benchmarks for Conviction=Voting

* Benchmarking pipeline complete

* Docs

* Formatting

* Remove unneeded warning

* Fix UI tests

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

* Docs

* Update frame/conviction-voting/src/vote.rs

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

* update sp-runtime version

* MEL Fixes for Referenda and Conviction Voting (#10725)

* free maxencodedlen

* more maxencodedlen

* more MEL

* more mel

* disable storage info

* More Referenda Patches (#10760)

* basic fixes

* fix benchmarking

* fix license

* prevent panic in curve math

* fmt

* bump crate versions

* Update mock.rs

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