Draft SRP 13 changes required for new SRP based DOTS compatible picking

[JussiKnuuttila]

TODO:

• Add DataExtraction pass to all URP text shaders (now only in Lit and Shader Graphs)
  ** Should URP also use ScenePickingPass to render object IDs, like HDRP? Would need to add ScenePickingPass everywhere, and the same is already necessary for DataExtraction (which is required to get world position and normals anyway, and is required by picking).
• Add submesh ID extraction, so drag and drop can be fixed.
• Selection outline code is still present here, but it will not be landed in the first PR. Probably it doesn't hurt to leave it in?
• HDRP PickingSpaceTransforms.hlsl is commented out instead of deleted

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[github-actions]

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[sebastienlagarde]

We should call this RENDER_AMBIENT_OCCLUSION as occlusion is undefined (in HDRP we have specular occlusion for example)

[sebastienlagarde]

replicate on privarte gitub