[PRX] Improve model compilation (#12787)
* Reimplement img2seq & seq2img in PRX to enable ONNX build without Col2Im (incompatible with TensorRT).
* Apply style fixes
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Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
Co-authored-by: Sayak Paul <spsayakpaul@gmail.com>
