Morton filters wanted

[plokhotnyuk]

https://github.com/AMDComputeLibraries/morton_filter

[thomasmueller]

Yes, it would be good to have them. Patches are welcome!

[thomasmueller]

Please note the original source code is written in C++; it might be hard to port. Morton filters were integrated into the C++ project at https://github.com/FastFilter/fastfilter_cpp/tree/master/src/morton - do you still need a Java version of Morton filters?