59 Setup MICM for MUSICA

[K20shores]

This, with NCAR/musica#19, closes #58. The branch name doesn't actually have anything to do with the work I did.

• Removes the C and fortran interfaces to micm. These now live in the MUSICA library
• Rewrote some of the CMake files so that MICM now is installed as a header only library
• Removes the tests for openmp and MPI. No tests actually use these right now. Also, now that the MICM target is header only, you can't link libraries to it. We would need to write tests that use OpenMP or MPI and link the test targets to those libraries

[codecov-commenter]

Codecov Report

Patch coverage: 100.00% and project coverage change: +73.60 🎉

Comparison is base (b89f9ff) 0.00% compared to head (9e594d5) 73.60%.

Additional details and impacted files

@@            Coverage Diff            @@
##           main      #71       +/-   ##
=========================================
+ Coverage      0   73.60%   +73.60%     
=========================================
  Files         0       14       +14     
  Lines         0      701      +701     
=========================================
+ Hits          0      516      +516     
- Misses        0      185      +185     

Impacted Files	Coverage Δ
include/micm/version.hpp	100.00% <100.00%> (ø)

... and 13 files with indirect coverage changes

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