WIP: add whitespace check

[simeonschaub]

No description provided.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.98%. Comparing base (bdb52bb) to head (6cbe567).
⚠️ Report is 268 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #463   +/-   ##
=======================================
  Coverage   92.98%   92.98%           
=======================================
  Files          14       14           
  Lines         812      812           
=======================================
  Hits          755      755           
  Misses         57       57           

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[oxinabox]

Rather than a check which can fail, can we use the reviewdog action to insert a review suggestion for how to fix?
That way do not have to change from the screen where it fails back the my editor.

[simeonschaub]

I'll look into that, once I figured out the other issues.

[st--]

@simeonschaub: in case you hadn't spotted it in the related issue yet, #462 (comment)