[ENH] (Cond)K-sample test using residuals

[adam2392]

Towards: #17

Changes proposed in this pull request:

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[codecov]

Codecov Report

❌ Patch coverage is 0% with 32 lines in your changes missing coverage. Please review.
✅ Project coverage is 74.80%. Comparing base (1938c19) to head (630e970).
⚠️ Report is 15 commits behind head on main.

Files with missing lines	Patch %	Lines
pywhy_stats/residual.py	0.00%	32 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #20      +/-   ##
==========================================
- Coverage   81.73%   74.80%   -6.94%     
==========================================
  Files           8        9       +1     
  Lines         345      377      +32     
  Branches       66       70       +4     
==========================================
  Hits          282      282              
- Misses         47       79      +32     
  Partials       16       16              

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