* Rebase: op-supervisor: Include executing message info when storing logs.

Takes from aj/parse-exec-msg and makes the following updates:
- uses upstream ABI definitions for identifier hash
- removes the core recording functionality for the moment
- fixes up inconsistent typing and merge conflicts due to rearranged packages

* Incorporate new ABI format

* remove trailing newline in contract

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Co-authored-by: Adrian Sutton <adrian@oplabs.co>

* op-supervisor: Introduce head tracker

* op-supervisor: Move log db to subpackage of db.

* op-supervisor: Route all updates through a common db that can track heads

* op-supervisor: Remove unused error.

* op-supervisor: Remove operations - it fits into a later PR.

* op-supervisor: Fix semgrep

* op-supervisor: Move resuming databases into ChainsDB so it can later update the chain heads too.

* op-supervisor: Move TruncatedHash and ExecutingMessage out of db package

* op-supervisor: Introduce EntryIdx type

Will make it clear when a value is a block number vs a db entry index when adding head tracking.

Executing messages aren't extracted yet but basic log information is hashed and written.