feat(api): add support for fetching blocks by slot

[PJColombo]

Checklist

• My change requires a documentation update, and I have done it.
• I have added tests to cover my changes.
• I have filled out the description and linked the related issues.

Description

It adds a new procedure getBySlot which enables consumers to fetch blocks by their slot. It also exposes the procedure as a REST endpoint.

Motivation and Context (Optional)

Related Issue (Optional)

Screenshots (if appropriate):

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[changeset-bot]

🦋 Changeset detected

Latest commit: ee895a3

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

This PR includes changesets to release 3 packages

Name	Type
@blobscan/api	Minor
@blobscan/rest-api-server	Patch
@blobscan/web	Patch

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[PabloCastellano]

Instead of expanding the scope of getByBlockId, why not create a new method?

[luis-herasme]

Instead of expanding the scope of getByBlockId, why not create a new method?

I prefer this too

[PJColombo]

Instead of expanding the scope of getByBlockId, why not create a new method?

Because I want to expose this procedure as a REST endpoint, having two endpoints that essentially perform the same function—returning a block based on an ID—feels redundant.

[codecov]

Codecov Report

Attention: Patch coverage is 97.95918% with 4 lines in your changes missing coverage. Please review.

Project coverage is 88.59%. Comparing base (74ee125) to head (ee895a3).
Report is 10 commits behind head on main.

Files with missing lines	Patch %	Lines
packages/api/src/routers/block/getByBlockId.ts	90.00%	3 Missing ⚠️
packages/api/src/routers/block/common/queries.ts	99.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #700      +/-   ##
==========================================
+ Coverage   88.50%   88.59%   +0.08%     
==========================================
  Files         160      162       +2     
  Lines       10919    11038     +119     
  Branches     1199     1202       +3     
==========================================
+ Hits         9664     9779     +115     
- Misses       1255     1259       +4     

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