feat(shuttle): Support deleting messages on DB that are missing on hub

[tybook]

There was existing support for handling messages that were present on hub and missing on DB, but not the opposite. From talking with Sanjay, it should be correct/safe to delete these messages from the DB.

Why is this change needed?

Shuttle only reconciled in one direction, even though everything appears 95% written to support both directions. This completes that. I know from adding logging to our Shuttle-powered app that that are a significant number of messages present in our DB that are missing in the hub.

Merge Checklist

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PR-Codex overview

This PR introduces functionality to delete messages from the database that are not present on the hub, enhancing the message handling logic in the shuttle package.

Detailed summary

• Updated handleMissingMessage method in HubEventProcessor to accept an optional missingInHub parameter.
• Added logic to delete messages if missingInHub is true; otherwise, it merges them.
• Adjusted calls to handleMissingMessage in app.ts to pass the new parameter.

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[changeset-bot]

🦋 Changeset detected

Latest commit: 0f45a55

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@farcaster/shuttle	Patch

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Name	Status	Preview	Comments	Updated (UTC)
hub-monorepo	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Sep 30, 2024 9:21pm

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 5 lines in your changes missing coverage. Please review.

Project coverage is 58.43%. Comparing base (1880070) to head (509c81a).
Report is 378 commits behind head on main.

Files with missing lines	Patch %	Lines
packages/shuttle/src/shuttle/hubEventProcessor.ts	0.00%	5 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #2341       +/-   ##
===========================================
- Coverage   74.05%   58.43%   -15.63%     
===========================================
  Files          99      138       +39     
  Lines        9425    19336     +9911     
  Branches     2097     6058     +3961     
===========================================
+ Hits         6980    11299     +4319     
- Misses       2327     7996     +5669     
+ Partials      118       41       -77     

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