Modified KOKKOS_FUNCTION macros so that if clang-tidy is detected the behavior is modified

[calewis]

The purpose for this is to make it easier to detect if a function has been annotated with KOKKOS_FUNCTION

[dalg24-jenkins]

Can one of the admins verify this patch?

[DavidPoliakoff]

Assuming this passes CI, I like the implementation

[dalg24]

Add to whitelist

[codecov-commenter]

Codecov Report

Merging #3087 into develop will decrease coverage by 0.0%.
The diff coverage is n/a.

@@            Coverage Diff            @@
##           develop   #3087     +/-   ##
=========================================
- Coverage     85.7%   85.6%   -0.1%     
=========================================
  Files          122     122             
  Lines        10392   10391      -1     
=========================================
- Hits          8906    8905      -1     
  Misses        1486    1486             

Flag	Coverage Δ
#clang	76.1% <ø> (+<0.1%)	⬆️
#gcc	86.4% <ø> (-0.1%)	⬇️

Impacted Files	Coverage Δ
containers/src/Kokkos_UnorderedMap.hpp	97.1% <0.0%> (-0.5%)	⬇️
core/src/OpenMP/Kokkos_OpenMP_Task.hpp	98.7% <0.0%> (-0.1%)	⬇️
core/src/impl/Kokkos_TaskQueueCommon.hpp	86.7% <0.0%> (+0.8%)	⬆️

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[dhollman]

LGTM