Move CUDA kernel check to c10 (#48277)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/48277
We move `TORCH_CUDA_KERNEL_LAUNCH_CHECK` from `//caffe2/aten/src/ATen/cuda/Exceptions.h` to `//caffe2/c10/cuda/CUDAException.h`.
The primary reason is for allowing us to use this MACRO in other subdirectories of //caffe2, not just in ATen. Refer to D24309971 (https://github.com/pytorch/pytorch/commit/353e7f940f548e0a0cb3b420b4190b4624ae9b41) for context.
An example of this use case is D24868557, where we add these checks to `//caffe2/caffe2/sgd`.
Also, this should not affect current files, because `Exceptions.h` includes `CUDAException.h`.
Test Plan:
```
buck build //caffe2/aten:ATen-cu
```
- https://fburl.com/buck/oq3rxbir
Also wait for sandcastle tests.
Reviewed By: ngimel
Differential Revision: D25101720
fbshipit-source-id: e2b05b39ff1413a21e64949e26ca24c8f7d0400f
