All GA models are supported by CoreML and have similar performance to using CoreML via torch.export

GA model list: https://docs.google.com/spreadsheets/d/18HbvYhnhPfkHih0oRPGvUloRVyZpTwKtZxaJrfkD_9s/edit?gid=0#gid=0

We should be able to follow this flow verbatim and get good perf: https://github.com/pytorch/executorch/blob/main/docs/source/backends-coreml.md

We want to see better performance in CoreML than XNNPACK for models that can take advantage of the GPU and ANE.