kele-list: Render columns + values server-side

[jinnovation]

Contributes to #248.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 18.44660% with 84 lines in your changes missing coverage. Please review.

Project coverage is 53.30%. Comparing base (c054b40) to head (d352758).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
kele.el	18.44%	84 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #249      +/-   ##
==========================================
- Coverage   55.94%   53.30%   -2.65%     
==========================================
  Files           1        1              
  Lines         883      938      +55     
==========================================
+ Hits          494      500       +6     
- Misses        389      438      +49     

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