Feature: Add support for flex column width

[amanmahajan7]

Column now supports CSS grid units including auto (default), fr, %, max-content etc. To handle virtualization, a flex column is assigned a width of (80px) and the actual width is calculated after the grid is rendered.

[codecov[bot]]

Codecov Report

Merging #2839 (151d724) into main (dd90693) will increase coverage by 0.32%. The diff coverage is 95.23%.

:exclamation: Current head 151d724 differs from pull request most recent head edc46e7. Consider uploading reports for the commit edc46e7 to get more accurate results

@@            Coverage Diff             @@
##             main    #2839      +/-   ##
==========================================
+ Coverage   94.02%   94.35%   +0.32%     
==========================================
  Files          38       38              
  Lines        1256     1258       +2     
  Branches      403      405       +2     
==========================================
+ Hits         1181     1187       +6     
+ Misses         75       71       -4     

Impacted Files	Coverage Δ
src/HeaderCell.tsx	90.00% <0.00%> (ø)
src/HeaderRow.tsx	100.00% <ø> (ø)
src/style/cell.ts	100.00% <ø> (ø)
src/DataGrid.tsx	91.26% <95.00%> (+0.84%)	:arrow_up:
src/hooks/useCalculatedColumns.ts	100.00% <100.00%> (+0.83%)	:arrow_up:
src/hooks/useGridDimensions.ts	100.00% <100.00%> (ø)
src/hooks/useViewportColumns.ts	85.71% <100.00%> (+2.85%)	:arrow_up:

[qujck]

Hi, is this PR going to be merged?

[gugu91]

Hey 👋 Thanks so much for all the great work on this PR. Any chances this PR will get merged soon?

[danhab99]

I am also quite keen to see this merged in please