KA kernels for 3D P4est

[benegee]

Add KernelAbstractions.jl kernels for basic rhs! functions for 3D P4estMesh implementation.

[github-actions[bot]]

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Testing

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[codecov[bot]]

Codecov Report

:x: Patch coverage is 77.49361% with 88 lines in your changes missing coverage. Please review. :white_check_mark: Project coverage is 96.64%. Comparing base (f4bbcd9) to head (7c6ab4a). :warning: Report is 29 commits behind head on main.

Files with missing lines	Patch %	Lines
src/solvers/dgsem_p4est/dg_3d.jl	74.60%	32 Missing :warning:
src/solvers/dgsem_structured/dg_3d.jl	44.12%	19 Missing :warning:
src/callbacks_step/stepsize_dg3d.jl	71.11%	13 Missing :warning:
src/callbacks_step/analysis_dg2d.jl	69.57%	7 Missing :warning:
src/callbacks_step/analysis_dg3d.jl	69.57%	7 Missing :warning:
src/solvers/dg.jl	60.00%	6 Missing :warning:
src/callbacks_step/save_solution.jl	66.67%	1 Missing :warning:
src/solvers/fdsbp_tree/fdsbp_1d.jl	83.33%	1 Missing :warning:
src/solvers/fdsbp_tree/fdsbp_2d.jl	85.71%	1 Missing :warning:
src/solvers/fdsbp_tree/fdsbp_3d.jl	85.71%	1 Missing :warning:

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2590      +/-   ##
==========================================
- Coverage   96.80%   96.64%   -0.17%     
==========================================
  Files         528      528              
  Lines       42655    42775     +120     
==========================================
+ Hits        41292    41337      +45     
- Misses       1363     1438      +75     

Flag	Coverage Δ
unittests	96.64% <77.49%> (-0.17%)	:arrow_down:

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