feat: add JNI bindings for the file reader/writer

[westonpace]

No description provided.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 1.30293% with 303 lines in your changes missing coverage. Please review.

Project coverage is 78.69%. Comparing base (f02095d) to head (e9b796a).
Report is 6 commits behind head on main.

Files with missing lines	Patch %	Lines
java/core/lance-jni/src/file_reader.rs	0.00%	136 Missing ⚠️
java/core/lance-jni/src/file_writer.rs	0.00%	97 Missing ⚠️
rust/lance-file/src/v2/reader.rs	3.44%	56 Missing ⚠️
java/core/lance-jni/src/error.rs	0.00%	14 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3588      +/-   ##
==========================================
- Coverage   78.86%   78.69%   -0.17%     
==========================================
  Files         256      258       +2     
  Lines       96493    96847     +354     
  Branches    96493    96847     +354     
==========================================
+ Hits        76095    76215     +120     
- Misses      17329    17561     +232     
- Partials     3069     3071       +2     

Flag	Coverage Δ
unittests	78.69% <1.30%> (-0.17%)	⬇️

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[jmhsieh]

the java code and test lgtm. I don't trust myself in rust yet.