feat: expose specifying scanner filters via datafusion

[westonpace]

We are trying to build a Datafusion table provider in LanceDB and it receives expressions as DF logical exprs. We can go DF expr -> substrait -> DF expr but it seems simpler to just expose the API to accept filters as DF exprs directly.

[westonpace]

Example usage: lancedb/lancedb#2128

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 78.84%. Comparing base (6b58bc1) to head (2e9ed6e).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3458      +/-   ##
==========================================
+ Coverage   78.80%   78.84%   +0.03%     
==========================================
  Files         251      251              
  Lines       92834    92834              
  Branches    92834    92834              
==========================================
+ Hits        73159    73193      +34     
+ Misses      16699    16666      -33     
+ Partials     2976     2975       -1     

Flag	Coverage Δ
unittests	78.84% <100.00%> (+0.03%)	⬆️

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