feat(rust): Use AsRef<Path> instead of PathBuf in sink_ methods

[datapythonista]

I guess there is no reason why something like shouldn't work:

ldf.sink_parquet("foo.parquet");

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.88%. Comparing base (3444f64) to head (ca9470b).
Report is 5 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #17150      +/-   ##
==========================================
- Coverage   80.88%   80.88%   -0.01%     
==========================================
  Files        1456     1456              
  Lines      191333   191337       +4     
  Branches     2742     2742              
==========================================
+ Hits       154757   154759       +2     
- Misses      36067    36069       +2     
  Partials      509      509              

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[ritchie46]

No reason. ;)