feat: cuda/cuvs acceleration for PQ training/assignment

[jacketsj]

blocked by #2816

Benchmarking ongoing on wikipedia-40M
early tests indicate that cuvs pq params might need some better tuning

Hardware for testing:

• n1-standard-16
• nvidia T4

[github-actions]

ACTION NEEDED
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[codecov-commenter]

Codecov Report

Attention: Patch coverage is 20.00000% with 12 lines in your changes missing coverage. Please review.

Project coverage is 78.09%. Comparing base (c0e1f15) to head (bca8c82).

Files with missing lines	Patch %	Lines
rust/lance/src/index/vector/ivf.rs	22.22%	5 Missing and 2 partials ⚠️
rust/lance/src/index/vector/ivf/builder.rs	0.00%	3 Missing ⚠️
rust/lance-index/src/vector/ivf/builder.rs	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2853      +/-   ##
==========================================
- Coverage   78.12%   78.09%   -0.04%     
==========================================
  Files         229      229              
  Lines       70492    70497       +5     
  Branches    70492    70497       +5     
==========================================
- Hits        55073    55054      -19     
- Misses      12305    12317      +12     
- Partials     3114     3126      +12     

Flag	Coverage Δ
unittests	78.09% <20.00%> (-0.04%)	⬇️

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