feat: sink integration for pynumaflow-lite

[vigith]

Closes #268

Tested in CWS

INFO:__main__:User Defined Sink: {"id":"1762630320511035393-0","value":1762630320511035310}
INFO:__main__:User Defined Sink: {"id":"1762630320511036643-0","value":1762630320511036560}
INFO:__main__:User Defined Sink: {"id":"1762630320511038435-0","value":1762630320511038351}
INFO:__main__:User Defined Sink: {"id":"1762630320511039601-0","value":1762630320511039518}
INFO:__main__:User Defined Sink: {"id":"1762630320511041601-0","value":1762630320511041518}
INFO:__main__:User Defined Sink: {"id":"1762630320511043143-0","value":1762630320511043060}
INFO:__main__:User Defined Sink: {"id":"1762630320511044268-0","value":1762630320511044185}
INFO:__main__:User Defined Sink: {"id":"1762630320511046143-0","value":1762630320511046060}

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 93.85%. Comparing base (83eeb23) to head (d09310e).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #281      +/-   ##
==========================================
+ Coverage   93.63%   93.85%   +0.21%     
==========================================
  Files          65       66       +1     
  Lines        2907     3009     +102     
  Branches      152      155       +3     
==========================================
+ Hits         2722     2824     +102     
  Misses        135      135              
  Partials       50       50              

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[BulkBeing]

This method doesn't return anything. The let binding can be removed.

[BulkBeing]

The type annotation looks wrong. Shouldn't it be collections.abc.Callable ?