[DOCS] Add docs on to_arrow and as_arrow

[samster25]

No description provided.

[codspeed-hq]

CodSpeed Performance Report

Merging #2965 will not alter performance

_{Comparing sammy/to-arrow-docs (1dce6ea) with main (02a3404)}

Summary

✅ 17 untouched benchmarks

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 78.73%. Comparing base (02a3404) to head (1dce6ea).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2965      +/-   ##
==========================================
+ Coverage   76.38%   78.73%   +2.34%     
==========================================
  Files         597      597              
  Lines       71788    69735    -2053     
==========================================
+ Hits        54836    54903      +67     
+ Misses      16952    14832    -2120     

Flag	Coverage Δ
	78.73% <ø> (+2.34%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
src/daft-core/src/array/ops/as_arrow.rs	100.00% <ø> (ø)

... and 21 files with indirect coverage changes

[github-actions]

🚀 Deployed on https://deploy-preview-2965--daft-docs-preview.netlify.app