Add workflow to lint compose files

[make-github-pseudonymous-again]

Fixes #972.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 65.84%. Comparing base (6308ea8) to head (e4321d4).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #973      +/-   ##
==========================================
- Coverage   65.88%   65.84%   -0.05%     
==========================================
  Files         715      715              
  Lines        9893     9893              
  Branches     1346     1346              
==========================================
- Hits         6518     6514       -4     
- Misses       2917     2919       +2     
- Partials      458      460       +2     

Flag	Coverage Δ
client	46.23% <ø> (-0.03%)	⬇️
server	61.86% <ø> (-0.02%)	⬇️
test	71.94% <ø> (-0.04%)	⬇️
test-app	53.70% <ø> (-0.03%)	⬇️

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