bvh as example for dynamic part of library

[JBludau]

This is the WIP for the dynamic part of the arborx-bindings (the bindings for the templates).
I called it dynamic part as the templates will require, that the types are inserted by python dynamically at runtime.

It will require the following steps:

1. python classes that register the call to a certain c++ function.
2. After inserting the type information the python classes can dispatch the compilation. This means just-in-time compiling (done by pykokkos with Allow users to use pykokkos to compile their own modules from source kokkos/pykokkos#119)
3. The resulting library is loaded by pykokkos. After this the python class can actually run the required call

[aprokop]

@JBludau Seems like no progress on kokkos/pykokkos#119 in the last 3 weeks, and it now seems to have some conflicts. What is required to make some progress on it? Is an alternative here to provide BVH as a part of the static module?

[JBludau]

I will try to update this this week as the reqirements are merged into pykokkos