[FEA]: Move `path_finder` to cuda-python top level

[rwgk]

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

General cuda-python

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

We decided to move the path_finder from cuda/bindings/path_finder to cuda/path_finder.

Describe the solution you'd like

import cuda.path_finder works.

Describe alternatives you've considered

No response

Additional context

No response