Add LaguerreGaussKernel

[svchb]

In my quick testing this didn't show the claimed accuracy improvement vs Wendland and Quintic.

[codecov[bot]]

Codecov Report

:x: Patch coverage is 85.00000% with 3 lines in your changes missing coverage. Please review. :white_check_mark: Project coverage is 89.59%. Comparing base (f8adb77) to head (bf4d3fe). :warning: Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/general/smoothing_kernels.jl	85.00%	3 Missing :warning:

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #893      +/-   ##
==========================================
- Coverage   89.60%   89.59%   -0.02%     
==========================================
  Files         120      120              
  Lines        8598     8618      +20     
==========================================
+ Hits         7704     7721      +17     
- Misses        894      897       +3     

Flag	Coverage Δ
total	89.59% <85.00%> (-0.02%)	:arrow_down:
unit	64.86% <85.00%> (+0.04%)	:arrow_up:

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[svchb]

The normal smoothing kernel test that we have doesn't work here since the truncation error is too large.

[efaulhaber]

The normal smoothing kernel test that we have doesn't work here since the truncation error is too large.

The Gauss kernel is also truncated. Why can't you run the same tests for this kernel?

[svchb]

The normal smoothing kernel test that we have doesn't work here since the truncation error is too large.

The Gauss kernel is also truncated. Why can't you run the same tests for this kernel?

I can but the errors seem to be unreasonable because they are larger than 1.

[svchb]

/run-gpu-tests

[svchb]

/run-gpu-tests