Adds linked cell parallel capability

[lebuller]

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 95.74468% with 8 lines in your changes are missing coverage. Please review.

Project coverage is 96.5%. Comparing base (dcaa181) to head (6525c20). Report is 59 commits behind head on master.

:exclamation: Current head 6525c20 differs from pull request most recent head 96a0bc1. Consider uploading reports for the commit 96a0bc1 to get more accurate results

Files	Patch %	Lines
core/src/Cabana_LinkedCellList.hpp	93.2%	5 Missing :warning:
core/src/Cabana_Parallel.hpp	97.9%	2 Missing :warning:
core/src/Cabana_NeighborList.hpp	83.3%	1 Missing :warning:

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #712    +/-   ##
=======================================
  Coverage    96.4%   96.5%            
=======================================
  Files          90      92     +2     
  Lines       14498   14849   +351     
=======================================
+ Hits        13989   14332   +343     
- Misses        509     517     +8     

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[streeve]

Initial performance check on Frontier (with Verlet results for comparison)

Note that the results marked neighbor here are NOT exposed to the user directly (could still be done with a linear Kokkos parallel loop and direct neighbor interface usage) and the results marked iterate use the new custom neighbor_parallel_for restricted to LinkedCellLists

[streeve]

CI timeouts unrelated (and manually tested on HIP)

[streeve]

Final performance comparisons from Frontier - no significant changes from previous results

[streeve]

Test failures unrelated (docker, jenkins, coverage)