* 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
Serban Iorga