[ROCM] Add rocjpeg support for GPU image decoding (RGB output)

[xytpai]

Add rocjpeg image decoding logic.

• Currently only support RGB output format due to its widespread use.

More formats and encoding paths will be supported in the future.

cc @jeffdaily @jithunnair-amd

[pytorch-bot]

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[xytpai]

@NicolasHug

[NicolasHug]

Hi @xytpai , thanks for the PR.
I don't think this is something we'll have the bandwidth to prioritize at this moment, although this might eventually become in scope for TorchCodec, e.g. via the "third-party TC extensions" that we plan to support (where decoder extensions could be added in third-parties repos, out of TC's core).

May I ask, is there already a Python library that exposes the Rocm jpeg decoder?