feat(database): IAM Auth

[Thegaram]

Port scroll-tech/scroll#1807 to chain-monitor.

[codecov]

Codecov Report

❌ Patch coverage is 56.38298% with 41 lines in your changes missing coverage. Please review.
✅ Project coverage is 19.47%. Comparing base (0f412f0) to head (3285486).

Files with missing lines	Patch %	Lines
internal/utils/database/db.go	0.00%	21 Missing ⚠️
internal/utils/database/iam.go	62.26%	18 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #132      +/-   ##
==========================================
+ Coverage   17.47%   19.47%   +1.99%     
==========================================
  Files          13       15       +2     
  Lines        1745     1838      +93     
==========================================
+ Hits          305      358      +53     
- Misses       1420     1458      +38     
- Partials       20       22       +2     

Flag	Coverage Δ
chain-monitor	19.47% <56.38%> (+1.99%)	⬆️

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