Custom SQL for get source maxLoadedAt

[ChenyuLInx]

Resolves #8797

This PR adds the ability to specify a custom sql to generate the maxLoadedAt time stamp on the source

video1790688049.mp4

Checklist

• I have read the contributing guide and understand what's expected of me.
• I have run this code in development, and it appears to resolve the stated issue.
• This PR includes tests, or tests are not required or relevant for this PR.
• This PR has no interface changes (e.g., macros, CLI, logs, JSON artifacts, config files, adapter interface, etc.) or this PR has already received feedback and approval from Product or DX.
• This PR includes type annotations for new and modified functions.

[github-actions]

Thank you for your pull request! We could not find a changelog entry for this change. For details on how to document a change, see the contributing guide.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.80%. Comparing base (7df04b0) to head (40844ad).
Report is 5 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #11163      +/-   ##
==========================================
- Coverage   88.92%   85.80%   -3.12%     
==========================================
  Files         187      187              
  Lines       23974    24038      +64     
==========================================
- Hits        21318    20627     -691     
- Misses       2656     3411     +755     

Flag	Coverage Δ
integration	81.71% <94.11%> (-4.59%)	⬇️
unit	62.06% <79.41%> (+0.08%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Components	Coverage Δ
Unit Tests	62.06% <79.41%> (+0.08%)	⬆️
Integration Tests	81.71% <94.11%> (-4.59%)	⬇️

[ChenyuLInx]

revert before merge