Merge topic 'cuda-runtime-cleanup'

bcb44ac2 CUDA: Simplify Clang implicit host linker settings
23519dd2 CUDA: Fix implicit runtime library filtering on Windows
16bed007 CUDA: Refactor implicit library filtering
5c7ca6f8 CUDA: Move VS CudaRuntime selection to be with rest of CUDA options
4468acb9 CUDA: Factor runtime library lookup into helper method

Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: Robert Maynard <robert.maynard@kitware.com>
Merge-request: !4776