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)