Migrate CI to GitHub Actions

[vitusortner]

No description provided.

[codecov]

Codecov Report

Merging #240 into develop will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff            @@
##           develop     #240   +/-   ##
========================================
  Coverage    80.66%   80.66%           
========================================
  Files           50       50           
  Lines         1381     1381           
========================================
  Hits          1114     1114           
  Misses         267      267

Flag	Coverage Δ
#floor	80.66% <ø> (?)
#floor_generator	80.16% <ø> (?)

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