[FEA]: Find headers support for mathdx libraries

[ZzEeKkAa]

Is this a duplicate?

• I confirmed there appear to be no duplicate issues for this request and that I agree to the Code of Conduct

Area

cuda.pathfinder

Is your feature request related to a problem? Please describe.

Add support for find_nvidia_header_directory for:

• mathdx
  • cufftdx
  • cublasdx
  • cusolverdx
• cutlass

Describe the solution you'd like

find_nvidia_header_directory("mathdx") returns header path of installed mathdx (either through pypi, conda or tarball):

Describe alternatives you've considered

I'm currently search for libraries manually

Additional context

Needed for nvmath

[rwgk]

I'm revamping the prioritization for all pathfinder issues.