* submit lane unblock transactions from relay

* moved body of select_nonces_to_deliver to the separate select_race_action

* extracted latest_confirmed_nonce_at_source method

* return Option<RaceAction> from select_race_action

* make required_source_header_at_target async

* remove extra argument from required_source_header_at_target

* small fixes in tests

* Revert "return Option<RaceAction> from select_race_action"

This reverts commit 9f13dbfa.

* implement required_source_header_at_target using what-if approach

* fix compilation

* fmt

* clippy

* moved some code to the can_submit_transaction_with

* fix invalid batch transaction

* RaceState is now trait

* clippy

* `select_nonces_to_deliver` is no longer `&mut self`

* reset submitted nonces on lost transaction

* clippy

* fmt

* `best_finalized_peer_at_best_self` in messages relay is now Option<> - before it was an error, which effectively blocked the lane

* unnecessary mut

* clone on return

* TypedLaneId -> LaneId

* fix benchmarks compilation

* Simplify submit_and_watch_signed_extrinsic

The way submit_and_watch_signed_extrinsic is used now, we can always
derive the SignParam from other params. If in the future we need more
customization possibilities, we can define a new method.

* Simplify submit_signed_extrinsic

* Send maybe_batch_tx as a parameter

Send `maybe_batch_tx` as a parameter to `submit_proof()`. This way we
can deduplicate the logic that submits the extrinsic for
`messages_source and `messages_target` and we can simplify the logic in
the race loop a bit.

* Define BatchProofTransaction

Deduplicate BatchConfirmationTransaction and BatchDeliveryTransaction by
replacing both of them with BatchProofTransaction

* Define ChainWithUtilityPallet and BatchCallBuilderConstructor

- Define `ChainWithUtilityPallet` in order to be able to associate the
  batching functionality with chains
- Defining `BatchCallBuilderConstructor` in order to have a more reliable
  way of checking whether an end of a messages pipeline supports batching
  or no. `BatchCallBuilderConstructor::new_builder()` returns an
  `Option<BatchCallBuilder>`.This is a bit safer because each time a caller
  tries to start creating a batch call, it will call `new_builder()` and
  will be required to handle the returned `Option`. Before we only had a
  bool `BATCH_CALL_SUPPORTED` the caller could have forgetten to check.

* batch transactions in message relay: API prototype

* get rid of Box<dyn BatchTransaction> and actually submit it

* test batch transactions

* message_lane_loop_works_with_batch_transactions

* removed logger

* BatchConfirmationTransaction + BatchDeliveryTransaction

* more prototyping

* fmt

* continue with batch calls

* impl BatchCallBuilder for ()

* BatchDeliveryTransaction impl

* BundledBatchCallBuilder

* proper impl of BundledBatchCallBuilder + use it in RialtoParachain -> Millau

* impl prove_header in OnDemandHeadersRelay

* impl OnDemandParachainsRelay::prove_header (needs extensive tests)

* added a couple of TODOs

* return Result<Option<BatchTx>> when asking for more headers

* prove headers when reauire_* is called && return proper headers from required_header_id

* split parachains::prove_header and test select_headers_to_prove

* more traces and leave TODOs

* use finality stream in SubstrateFinalitySource::prove_block_finality

* prove parachain head at block, selected by headers relay

* const ANCIENT_BLOCK_THRESHOLD

* TODO -> proof

* clippy and spelling

* BatchCallBuilder::build_batch_call() returns Result

* read first proof from two streams

* FailedToFindFinalityProof -> FinalityProofNotFound

* changed select_headers_to_prove to version from PR review

* remove message fee

* it is compiling!

* fixes + fmt

* more cleanup

* more cleanup

* restore MessageDeliveryAndDispatchPayment since we'll need relayer rewards

* started rational relayer removal

* more removal

* removed estimate fee subcommand

* remove DispatchFeePayment

* more removals

* removed conversion rates && some metrics

* - unneeded associated type

* - OutboundMessageFee

* fix benchmarks compilation

* fmt

* test + fix benchmarks

* fix send message

* clippy

* update Substrate + Polkadot + Cumulus refs

* Origin -> RuntimeOrigin

* weights v1.5

* update refs once again + `cargo test -p pallet-bridge-grandpa` works

* started work on `cargo test -p pallet-bridge-messages`

* cargo test -p pallet-bridge-relayers

* cargo test -p pallet-bridge-parachains

* cargo test -p millau-runtime

* cargo test -p bridge-runtime-common

* cargo test -p rialto-runtime

* cargo test -p rialto-parachain-runtime

* cargo test -p millau-bridge-node

* cargo test -p rialto-bridge-node

* cargo test -p rialto-parachain-collator

* cargo test -p messages-relay

* cargo test -p parachains-relay

* cargo test -p substrate-relay

* cargo test --all

* cargo check -p millau-runtime --locked --features runtime-benchmarks

* fix remaining test

* fmt

* try to allow clippy failure temporarily

* Revert "try to allow clippy failure temporarily"

This reverts commit d1b65935.

* use min_by

* Revert "use min_by"

This reverts commit 33042f49.

* Revert "Revert "use min_by""

This reverts commit 1d2204f0.

* trigger CI

* Revert "trigger CI"

This reverts commit 259d91b5.

* new day, new clippy warning

* more clippy issues

* read extrinsic dispatch result for mined transaction

* commit for the history

* Revert "commit for the history"

This reverts commit 99341b04.

* Revert "read extrinsic dispatch result for mined transaction"

This reverts commit 662b776c.

* check for successfult transaction in finality relay

* check for successful transaction in parachains relay

* TrackedTransactionStatus ->TrackedTransactionStatus<HeaderId>

* check for successful transaction in messages relay

* fix compilation

* message_lane_loop_is_able_to_recover_from_unsuccessful_transaction

* fixed too-complex-type clippy error

* aaand compilation

* change sign_transaction method

* clippy

* rustup update && clippy

* remove redudnant clone

* unprofitable message delivery tx metric

* proper impl

* send Rialto -> Millau messages using XCM pallet

* use altruistic relays in Rialto <> Millau bridge

* add unprofitable transactions dashboard

* fix + logging

* fix test

* BridgeRejectObsoleteMessages

* add obsolete confirmations verification to the BridgeRejectObsoleteMessages

* move tests where they belong

* fix clippy warnings

* try to reenable proper clippy on CI

* fix clippy error

* more Eqs

* ignore clippy::derive-partial-eq-without-eq - clippy seems to be broken now :/

* using_same_fork metric in finality relay

* support `using_different_forks` in messages relay

* added dashboards and alerts

* lockfile

* unify metric names

* refactor standalone metrics

* headers sync metrics

* post-merge fix

* fix compilation

* fmt

* fix dashboards

* fix local dashboards

* update Rococo/Wococo runtime version

* remove commented code

* fixed grumbles

* fmt

* fixed widget names

* Add relayer strategy

* Add default relayer strategy

* default relayer strategy

* expose relayer strategy

* fix compile

* fix compile

* docs

* Rename Relayer to Relay, keep RelayerDecide

* split `DefaultRelayerStrategy` into `AltruisticRelayerStrategy` and `RationalRelayerStrategy`

* Remove relayer mode

* Remove unused import

* Rename `RelayerStrategy` to `RelayStrategy`

* Add missing docs

* clippy

* clippy

* clippy

* clippy

* Revert `relayer_mode` and add `MixStrategy`

* Add `EnforcementStrategy`

* fix bug and simplify relay strategy

* Update message_lane_loop.rs

* Update messages_target.rs

* clippy

* clippy

* clippy

* clippy

* clippy

* clippy

* clippy

* fix test

* fix test

* test

test

test

fix test

* 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]>

* 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]>

* cli option for greedy relayer + run no-losses relayer by default

* trigger build

* Revert "trigger build"

This reverts commit f77ae3a6.

* NoLosses -> Rational

* use real conversion rate in greedy relayer strategy

* only accept positive, normal numbers in FloatJsonValueMetric

* shared conversion rate metric value

* clippy

greedy relayer don't need message dispatch to be prepaid if dispatch is supposed to be paid at the target chain (#1016)

* introduce relayer mode enum

* removed MaximalReward mode

* TODO

* Saturating -> SaturatingAdd

* ref issue in TODOs

* Update relays/messages/src/message_race_delivery.rs

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

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

* require lane source -> target headers when weknow all headers that have produced messages, but are unable to deliver all messages because of unrewarded relayers vec capacity

* Update relays/messages/src/message_race_delivery.rs

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

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

* prefix in relay loops logs

* fmt

* complex headers+messages relay

* post-merge fix

* fix + test issue with on-demand not starting

* 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

* on-demand headers relay

* bool::then

* move file

* atomic submit_signed_extrinsic

* remove cli options from future

* test on-demand relay

* TODOs

* fixed initialization call for Westend -> Millau

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

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

* removed on_demand_headers_relay.rs

* on_demand_headers_relay traces

* fix compilation

* fmt

* docs

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

* slightly changed relay loop initialization

* git mv

* clippy

* more clippy

* loop_run -> run_loop

* review and clippy

* clippy

* Remove chains.

* Move relay clients.

* Flatten generic.

* Fix fmt.

* use runtime:: prefix for message-lane pallet traces

* renamed message-lane (module and primitives) folder into messages

* replace "message lane" with "messages" where appropriate