feat: add take_rows operation to the v2 file reader's python bindings

[westonpace]

This also plumbs out basic support for take_rows and is a prerequisite for adding a fragment-level take

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 28.73563% with 62 lines in your changes are missing coverage. Please review.

Project coverage is 80.59%. Comparing base (b61850b) to head (7930e21).

Files	Patch %	Lines
rust/lance-file/src/v2/reader.rs	11.11%	47 Missing and 1 partial ⚠️
...ust/lance-encoding/src/encodings/logical/struct.rs	42.85%	11 Missing and 1 partial ⚠️
rust/lance-encoding/src/decoder.rs	80.00%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2331      +/-   ##
==========================================
- Coverage   80.64%   80.59%   -0.05%     
==========================================
  Files         192      192              
  Lines       56684    56741      +57     
  Branches    56684    56741      +57     
==========================================
+ Hits        45712    45731      +19     
- Misses       8405     8448      +43     
+ Partials     2567     2562       -5     

Flag	Coverage Δ
unittests	80.59% <28.73%> (-0.05%)	⬇️

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