refactor(message relayer): Split message relayer into reusable parts · gear-tech/gear-bridges@96ad5f2

unused import: `HashSet`

unused imports: `Gauge`, `IntCounter`, and `IntGauge`

unused imports: `MeteredService` and `impl_metered_service`

type alias `BlockNumber` is never used

struct `EraTxSubmitter` is never constructed

struct `PendingTx` is never constructed

struct `MessageInBlock` is never constructed

associated items `new`, `run`, `run_inner`, `submit_queued_messages`, `try_finalize_tx`, and `submit_message` are never used

function `message_hash` is never used

Process completed with exit code 101.

Restore cache failed: Dependencies file is not found in /home/runner/work/gear-bridges/gear-bridges. Supported file pattern: go.sum

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