CI+Cmake: build properly on macOS and enable CI testing

[dev-zero]

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[codecov]

Codecov Report

Merging #98 into develop will decrease coverage by <.01%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           develop      #98      +/-   ##
===========================================
- Coverage    57.33%   57.32%   -0.01%     
===========================================
  Files           91       91              
  Lines        20134    20133       -1     
===========================================
- Hits         11543    11542       -1     
  Misses        8591     8591

Impacted Files	Coverage Δ
src/block/dbcsr_block_operations.F	67.9% <0%> (-0.08%)	⬇️

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