Instead of tables, use divs + css grid

[benvinegar]

This fixes the background color on table rows not going all the way across the row, which was a limitation of table elements.

After this PR, the background color actually takes up X% of the row.

Before:

After:

[codecov]

Codecov Report

Attention: Patch coverage is 97.61905% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 79.14%. Comparing base (3d71568) to head (4538a9a).

Files	Patch %	Lines
app/components/ui/table.tsx	96.96%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #78      +/-   ##
==========================================
+ Coverage   79.05%   79.14%   +0.09%     
==========================================
  Files          18       18              
  Lines        2253     2263      +10     
  Branches      146      148       +2     
==========================================
+ Hits         1781     1791      +10     
  Misses        467      467              
  Partials        5        5              

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