feat(indexer) API Observability for Bridge Supplies

[epociask]

Description

• Added new endpoint

Tests
Updated E2E test to generate supply amounts locally and cross validate with amounts returned by API client.

Additional context

base-org/pessimism#148

Metadata

• Fixes #[Link to Issue]

[github-actions]

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[codecov]

Codecov Report

Merging #7680 (fd47aec) into develop (88eee4f) will decrease coverage by 0.33%.
Report is 77 commits behind head on develop.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           develop    #7680      +/-   ##
===========================================
- Coverage    46.08%   45.76%   -0.33%     
===========================================
  Files          170      170              
  Lines         7121     7121              
  Branches      1138     1138              
===========================================
- Hits          3282     3259      -23     
- Misses        3712     3734      +22     
- Partials       127      128       +1     

Flag	Coverage Δ
cannon-go-tests	63.47% <ø> (ø)
chain-mon-tests	26.95% <ø> (ø)
common-ts-tests	26.74% <ø> (ø)
contracts-bedrock-tests	39.54% <ø> (-0.79%)	⬇️
contracts-ts-tests	100.00% <ø> (ø)
core-utils-tests	44.03% <ø> (ø)
sdk-next-tests	41.92% <ø> (ø)
sdk-tests	41.92% <ø> (ø)

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see 7 files with indirect coverage changes