Add Kokkos version with dependent Cabana implementation

[streeve]

Convert standalone Cabana implementation to Kokkos version with dependent Cabana version, where only functions with neighbor loops differ significantly

LAMMPS interface is still in progress, as is full testing of the Kokkos only codepath

[streeve]

One thing missing here is that the Cabana dependency on the Kokkos version should be included in the makefile (currently a user would need to include both ModeKokkos.h and ModeCabana.h explicitly

[singraber]

Thanks a lot for keeping me updated, I am looking forward to test it :-)!

[codecov-commenter]

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 71.76%. Comparing base (2f05836) to head (0283d5e).
⚠️ Report is 253 commits behind head on master.
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Additional details and impacted files

@@            Coverage Diff             @@
##           master      #88      +/-   ##
==========================================
+ Coverage   71.71%   71.76%   +0.05%     
==========================================
  Files         129      129              
  Lines       13954    13981      +27     
==========================================
+ Hits        10007    10034      +27     
  Misses       3947     3947              

Flag	Coverage Δ
cpp	74.55% <ø> (+0.02%)	⬆️
python	71.76% <ø> (+0.05%)	⬆️

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