Create DocsPreviewCleanup.yml

[andreasnoack]

To avoid that gh-pages grows too large because of the previews. Alternative to #580

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.33%. Comparing base (89493a4) to head (c1f0151).
Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #583   +/-   ##
=======================================
  Coverage   90.33%   90.33%           
=======================================
  Files           8        8           
  Lines        1107     1107           
=======================================
  Hits         1000     1000           
  Misses        107      107           

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