[Vulkan] Add generic VulkanOpContext
Pull Request resolved: https://github.com/pytorch/pytorch/pull/78814
Differential Revision: [D36605275](https://our.internmc.facebook.com/intern/diff/D36605275/)
**NOTE FOR REVIEWERS**: This PR has internal Facebook specific changes or comments, please review them on [Phabricator](https://our.internmc.facebook.com/intern/diff/D36605275/)!
Approved by: https://github.com/SS-JIA
