[Vulkan] Enable Codegen ShaderInfo Registry from GLSL files (conv2d) (#91915)
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This diff allows for adding entries to the shader registry by specifying which op names and registry keys should map to a Shader in the Shader's glsl file.
This can be done by adding a REGISTER_FOR line with a tuple of (op name, list of registry keys) to the ShaderInfo comment in the glsl file
Ex.
```
REGISTER_FOR = ('conv2d', ['catchall', ...])
```
This diff also registers the conv2d Shader under ```'conv2d → 'catchall'``` in the registry and uses ```VK_REGISTRY_KERNEL``` to retrieve the shader by look up in the registry
The shader registry generated in spv.cpp now looks like
```
ShaderRegistry shader_registry = {
{"conv2d", {{"catchall", "conv2d"}}}};
```
Differential Revision: [D42197400](https://our.internmc.facebook.com/intern/diff/D42197400/)
Pull Request resolved: https://github.com/pytorch/pytorch/pull/91915
Approved by: https://github.com/mcr229
