[vulkan] Fix Bazel build, add aten/native/vulkan/stub/*.cpp (#39018)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/39018
Differential Revision: D21724853
Pulled By: IvanKobzarev
fbshipit-source-id: 8d5bbc914b168da7d27c5447d625a9cfce61127f
