feat: add file writer option for python sdk

[SaintBacchus]

No description provided.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 92.00000% with 2 lines in your changes missing coverage. Please review.

Project coverage is 78.63%. Comparing base (4358df1) to head (878c4f7).

Files with missing lines	Patch %	Lines
rust/lance/src/dataset/fragment/write.rs	66.66%	0 Missing and 1 partial ⚠️
rust/lance/src/dataset/write.rs	95.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3523      +/-   ##
==========================================
- Coverage   78.64%   78.63%   -0.01%     
==========================================
  Files         254      254              
  Lines       94952    94963      +11     
  Branches    94952    94963      +11     
==========================================
+ Hits        74674    74677       +3     
- Misses      17251    17259       +8     
  Partials     3027     3027              

Flag	Coverage Δ
unittests	78.63% <92.00%> (-0.01%)	⬇️

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