FEAT: DataFrame Where OP Support

[fengsxy]

What do these changes do?

make the code support for Where Operation

[codecov]

Codecov Report

Attention: 18 lines in your changes are missing coverage. Please review.

Comparison is base (e4a996f) 93.55% compared to head (efc498c) 93.58%.

Files	Patch %	Lines
python/xorbits/_mars/dataframe/base/where.py	82.52%	10 Missing and 8 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #756      +/-   ##
==========================================
+ Coverage   93.55%   93.58%   +0.02%     
==========================================
  Files        1059     1060       +1     
  Lines       79781    79886     +105     
  Branches    16504    16522      +18     
==========================================
+ Hits        74640    74761     +121     
+ Misses       3461     3439      -22     
- Partials     1680     1686       +6     

Flag	Coverage Δ
unittests	93.47% <82.85%> (+0.02%)	⬆️

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