feat: support remapping vector storage and flat index

[BubbleCal]

prepare for supporting remap for new vector index format, HNSW remap not supported because simply mapping the row ids could break the connectivity of graph

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 77.77778% with 76 lines in your changes missing coverage. Please review.

Project coverage is 79.00%. Comparing base (2b29487) to head (c18b4dc).

Files with missing lines	Patch %	Lines
rust/lance/src/index/vector/builder.rs	76.29%	1 Missing and 31 partials :warning:
rust/lance-index/src/vector/storage.rs	64.70%	7 Missing and 5 partials :warning:
rust/lance/src/index/vector/ivf/v2.rs	89.15%	8 Missing and 1 partial :warning:
rust/lance/src/index/vector/utils.rs	64.28%	4 Missing and 1 partial :warning:
rust/lance-file/src/v2/writer.rs	69.23%	0 Missing and 4 partials :warning:
rust/lance-index/src/vector.rs	0.00%	3 Missing :warning:
rust/lance-index/src/vector/hnsw/builder.rs	0.00%	2 Missing :warning:
rust/lance-index/src/vector/v3/shuffler.rs	90.90%	0 Missing and 2 partials :warning:
rust/lance/src/dataset/scanner.rs	77.77%	0 Missing and 2 partials :warning:
rust/lance/src/index/vector/ivf.rs	85.71%	1 Missing and 1 partial :warning:
... and 3 more

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2708      +/-   ##
==========================================
+ Coverage   78.80%   79.00%   +0.19%     
==========================================
  Files         246      246              
  Lines       86637    86900     +263     
  Branches    86637    86900     +263     
==========================================
+ Hits        68278    68655     +377     
+ Misses      15529    15378     -151     
- Partials     2830     2867      +37     

Flag	Coverage Δ
unittests	79.00% <77.77%> (+0.19%)	:arrow_up:

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[wjones127]

@BubbleCal I've marked this as draft, since I'm assuming it is not ready for review. (There are no unit tests.) Mark it as ready for review when it is ready.