chore: add metric to track events received by kind

[aditiharini]

There are regular spikes in events received that aren't reflected in the hub metrics. This metric should be useful for understanding what kind of events are causing the spikes.

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PR-Codex overview

This PR adds a metric for events processed with event type tag in the shuttle package.

Detailed summary

• Added metric for events processed with event type tag in shuttle/eventStream.ts
• Incremented attempt count for current and stale events
• Added hubEventType tag to metrics
• Calculated dequeue delay for events

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[changeset-bot]

🦋 Changeset detected

Latest commit: d8b5fef

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 11, 2024 7:38pm

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.

Project coverage is 44.31%. Comparing base (1880070) to head (d8b5fef).
Report is 347 commits behind head on main.

Files with missing lines	Patch %	Lines
packages/shuttle/src/shuttle/eventStream.ts	0.00%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #2309       +/-   ##
===========================================
- Coverage   74.05%   44.31%   -29.75%     
===========================================
  Files          99      146       +47     
  Lines        9425    25499    +16074     
  Branches     2097     9115     +7018     
===========================================
+ Hits         6980    11299     +4319     
- Misses       2327    12425    +10098     
- Partials      118     1775     +1657     

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