Add polars support

[ahuang11]

No description provided.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 69.66292% with 27 lines in your changes are missing coverage. Please review.

Project coverage is 79.50%. Comparing base (4e7bb0f) to head (d57bbba).
Report is 20 commits behind head on main.

❗ Current head d57bbba differs from pull request most recent head d6c3500. Consider uploading reports for the commit d6c3500 to get more accurate results

Files	Patch %	Lines
streamjoy/polars.py	0.00%	16 Missing ⚠️
streamjoy/streams.py	90.32%	6 Missing ⚠️
streamjoy/renderers.py	50.00%	5 Missing ⚠️

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Additional details and impacted files

@@            Coverage Diff             @@
##             main      #15      +/-   ##
==========================================
+ Coverage   77.25%   79.50%   +2.24%     
==========================================
  Files          10       11       +1     
  Lines        1042     1561     +519     
==========================================
+ Hits          805     1241     +436     
- Misses        237      320      +83     

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