feat: row id index structures

[wjones127]

Closes: #2308

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 64.55285% with 218 lines in your changes are missing coverage. Please review.

Project coverage is 80.50%. Comparing base (b63da09) to head (cf0abfa).
Report is 8 commits behind head on main.

Files	Patch %	Lines
rust/lance-table/src/rowids/encoded_array.rs	49.02%	103 Missing and 2 partials ⚠️
rust/lance-table/src/rowids.rs	76.89%	60 Missing and 1 partial ⚠️
rust/lance-table/src/rowids/serde.rs	64.13%	24 Missing and 28 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2303      +/-   ##
==========================================
- Coverage   80.66%   80.50%   -0.17%     
==========================================
  Files         191      194       +3     
  Lines       56304    57052     +748     
  Branches    56304    57052     +748     
==========================================
+ Hits        45419    45931     +512     
- Misses       8340     8549     +209     
- Partials     2545     2572      +27     

Flag	Coverage Δ
unittests	80.50% <64.55%> (-0.17%)	⬇️

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