The GPU implementation is a bit too complex
to implement for now.
As we are improving shader loading, having the
CPU timings is already helpful.
Note that `Map<size_t, int>` does not compile
on Clang.
This is exposing the `--profile-gpu` option on
all backends as the vulkan backend should follow
shortly.
Pull Request: https://projects.blender.org/blender/blender/pulls/139551
7245262de8