Implement Poisson Disk/Sphere Point Distribution

[millerta]

Implement Poisson Disk/Sphere Point Distribution - See Carl

[millerta]

Jeffrey has written the C++ code for this routine.
Carl Gable is working on a driver.
I am writing wrappers to integrate with poisson and voronoi cpp codes.

See Daniel's cpp work at https://github.com/lanl/LaGriT/tree/dev/livingston/cmake/src/lg_interface/src

[millerta]

Daniel wrote some new code to take care of pointer issues. I have not tried to integrate with our code yet.
Copied here for reference (I added 3 to filename as these are 3rd attempt from Daniel).
See Daniel's work at https://github.com/lanl/LaGriT/tree/dev/livingston/cmake/src/lg_interface/src
See also
https://github.com/lanl/LaGriT/blob/dev/livingston/cmake/src/lg_interface/include/lg.h
See also
https://raw.githubusercontent.com/lanl/LaGriT/dev/livingston/cmake/src/lg_interface/CMakeLists.txt
lg_interface3.h.txt
bind_c_to_fortran3.f90.txt
public_interface3.cpp.txt

[millerta]

LaGriT V3.3.3 release includes 2D poisson disk point distribution.
3D capability is under development and will be in next release.