WebGPURenderer: Add snapshot facility, record scene pass as a RenderBundle for reuse, #26983
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Related issue: #26876
First pass at a snapshot facility for comment. Only lightly tested.
Adds:
renderer.createSnapshot() which instructs the next call to renderer.render() to save the render pass as a bundle for reuse.
renderer.destroySnapshot() which removes a snapshot if present.
TODO:
This assumes rendering to screen only, snapshot needs attaching to renderContextData rather than the backend.