Add the ColumnControl extension

[mwouts]

Examples for the columnControl option are available at https://github.com/mwouts/itables/blob/column_control/docs/options/column_control.md

Closes #403

[github-actions]

Thank you for making this pull request.

Did you know? You can try it on Binder: .

Also, the version of ITables developed in this PR can be installed with pip:

pip install git+https://github.com/mwouts/itables.git@column_control

(this requires nodejs, see more at Developing ITables)

[Copilot]

Copilot encountered an error and was unable to review this pull request. You can try again by re-requesting a review.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 88.16%. Comparing base (e63f81e) to head (d8c7ea7).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #428      +/-   ##
==========================================
+ Coverage   88.14%   88.16%   +0.01%     
==========================================
  Files          50       50              
  Lines        2025     2028       +3     
==========================================
+ Hits         1785     1788       +3     
  Misses        240      240              

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