* Unify error enums in substrate and ethereum clients with `thiserror`

Related to https://github.com/paritytech/parity-bridges-common/issues/857

* Add license pre-amble

* rustfmt

* Fix spelling

* Alter gitlab.

* Use substrate's rustfmt.toml

* cargo +nightly fmt --all

* Fix spellcheck.

* cargo +nightly fmt --all

* format.

* Fix spellcheck and fmt

* fmt?

* Fix spellcheck

Co-authored-by: Tomasz Drwięga <[email protected]>

* Substrate: 63b32fbaa2764c0a8ee76b70cdfa0fcb59b7181f
Polkadot:  7229ab87acf5bc5d4d10655ad1a9819a1e317442
Cumulus:   d5284b0e78be3a18a3371103dd00449aceb082df

* rialto parachain runtime

* fixed tests

* add node + bump refs (not compiling yet):
Substrate:           630422d6108cbaaca893ab213dde69f3bdaa1f6b
Polkadot:            7229ab87acf5bc5d4d10655ad1a9819a1e317442
Cumulus:             5af2990cfd3711f86c7cb8606b22364208a5c32d
GrandpaBridgeGadget: c152c45ac331eb8ab40d956ab1d008d181810ef4

* fix compilation (collator is not working)

* more fixes

* fmt

* spellcheck

* fix warnings

* fix compilation

* fmt

* trigger CI

* trigger CI

* Revert "trigger CI"

This reverts commit a31f53ce.

* benchmarks

* fix benchmarks

* fix again

* Revert "Revert "trigger CI""

This reverts commit 1dea8b42.

* Revert "Revert "Revert "trigger CI"""

This reverts commit 8fb74fa5.

* try fix

* lost lock file

* spellcheck

* try to disable sccache for cargo check

* Revert "Revert "Revert "Revert "trigger CI""""

This reverts commit f1574614.

* try to disable again

* disable sccache for test

* move some associated types from relay_substrate_client::Chain to bp_runtime::Chain

* dummy commit

* Revert "dummy commit"

This reverts commit 81bc64aa.

* fix delivery transaction estimation in greedy relayer

* fixed typo

* improve logging

* improve logging

* fmt

* fix compilation

* fmt

* Update relays/lib-substrate-relay/src/messages_target.rs

Co-authored-by: Tomasz Drwięga <[email protected]>

* review

Co-authored-by: Tomasz Drwięga <[email protected]>

* fix(spellcheck): test of fixing

* fix(hunspell): improved many typos etc.

* fix(hunspell): all errors solved

* fix(hunspell): extended scope of files - the build should fail

* Return error code.

* Fix spelling, sort dictionary.

* fix(hunspell): added fix to gitlabs check

* fix(typo): one typo and test of verification on github

* fix(typo): one typo

Co-authored-by: Tomasz Drwięga <[email protected]>

* move ChainWithBalances::NativeBalance -> Chain::Balance

* dummy commit

* Revert "dummy commit"

This reverts commit c0064215.

* Bump Substrate

* Change usage of "Module" to "Pallet"

Related Substrate PR: https://github.com/paritytech/substrate/pull/8372

* Add `OnSetCode` config param

Related Substrate PR: https://github.com/paritytech/substrate/pull/8496

* Update Aura Slot duration time type

Related Substrate PR: https://github.com/paritytech/substrate/pull/8386

* Add `OnSetCode` to mock runtimes

* Add support for multiple justifications

Related Substrate PR: https://github.com/paritytech/substrate/pull/7640

* Use updated justification type in more places

* Make GenesisConfig type non-optional

Related Substrate PR: https://github.com/paritytech/substrate/pull/8275

* Update service to use updated telemetry

Related Substrate PR: https://github.com/paritytech/substrate/pull/8143

* Appease Clippy

* administrative metrics

* fmt

* fix compilation

* fix compilation again

* and another one

* remove GenericLoopMetrics

* chttp -> isahc

* remove redundant marker

* not about price metrics

* fmt

* Update copyright date to 2021

* Bump date in license header template

* Remove chains.

* Move relay clients.

* Flatten generic.

* Fix fmt.

* Nest some crates.

* Alter command execution to make it easier to add new bridges.

* Rename sub-dirs.

* cargo fmt --all

* Address clippy.

* Update relays/substrate/src/rialto_millau/cli.rs

Co-authored-by: Hernando Castano <[email protected]>

Co-authored-by: Hernando Castano <[email protected]>

* finality proofs relay

* SyncHeader::is_mandatory

* empty ancestry proof

* logs

* fixed submit condition

* fixed wrong split index

* tick comment

* recent_finality_proofs

* basic finality loop tests

* removed obsolete files

* rename files in substrate relay

* fmt

* clippy

* fixed TODOs

* clippy

* stop syncing if target node is out of sync

* more clippy

* more clippy

* Update relays/finality-relay/src/finality_loop.rs

Co-authored-by: Hernando Castano <[email protected]>

* Update relays/finality-relay/src/finality_loop.rs

Co-authored-by: Hernando Castano <[email protected]>

* Update relays/finality-relay/src/finality_loop.rs

Co-authored-by: Hernando Castano <[email protected]>

* docs

* moved doc

* typo

* Update relays/finality-relay/src/finality_loop_tests.rs

Co-authored-by: Hernando Castano <[email protected]>

* Update relays/finality-relay/src/finality_loop_tests.rs

Co-authored-by: Hernando Castano <[email protected]>

* header_and_finality_proof_by_number -> header_and_finality_proof

* VecDeque isn't required (because of make_contiguous)

* fixed wrong expect

* Update relays/finality-relay/src/finality_loop.rs

Co-authored-by: Hernando Castano <[email protected]>

* Update relays/substrate/src/rialto_headers_to_millau.rs

Co-authored-by: Hernando Castano <[email protected]>

* Update relays/substrate/src/rialto_headers_to_millau.rs

Co-authored-by: Hernando Castano <[email protected]>

* RialtoSyncHeader

* Update relays/finality-relay/src/finality_loop.rs

Co-authored-by: Tomasz Drwięga <[email protected]>

* Update relays/finality-relay/src/finality_loop.rs

Co-authored-by: Tomasz Drwięga <[email protected]>

* removed wrong comment

* Update relays/finality-relay/src/finality_loop.rs

Co-authored-by: Tomasz Drwięga <[email protected]>

* fix used runtime methods names

* fix for new jsonrpsee

* fix comment

* initialize finality verifier pallet

* fmt

Co-authored-by: Hernando Castano <[email protected]>
Co-authored-by: Tomasz Drwięga <[email protected]>

* substrate relay guards

* checked time condition

* ChainWithBalances

* removed obsolete comment

* Update relays/substrate-client/src/chain.rs

Co-authored-by: Tomasz Drwięga <[email protected]>

* trailing space

Co-authored-by: Tomasz Drwięga <[email protected]>