Add CI scripts to run supported executorch networks through MPS #1

Job	Run time
gather-models-mps	1m 25s
gather-models-mps	3m 45s
gather-models-mps	1m 25s
gather-models-mps	7m 27s
gather-models-mps	5m 26s
gather-models-mps	5m 23s
test-mps-delegate-macos	0s
test-mps-delegate-macos	1s
test-mps-delegate-macos	1s
test-mps-delegate-macos	1s
test-mps-delegate-macos	1s
test-mps-delegate-macos (cmake, mul, macos-executorch)	10s
test-mps-delegate-macos (cmake, linear, macos-executorch)	9s
test-mps-delegate-macos (cmake, add, macos-executorch)	11s
test-mps-delegate-macos (cmake, add_mul, macos-executorch)	10s
test-mps-delegate-macos (cmake, softmax, macos-executorch)	10s
test-mps-delegate-macos (cmake, dl3, macos-executorch)	10s
test-mps-delegate-macos (cmake, edsr, macos-executorch)	9s
test-mps-delegate-macos (cmake, emformer_transcribe, macos-executorch)	9s
test-mps-delegate-macos (cmake, emformer_predict, macos-executorch)	10s
test-mps-delegate-macos (cmake, emformer_join, macos-executorch)	11s
test-mps-delegate-macos (cmake, llama2, macos-executorch)	10s
test-mps-delegate-macos (cmake, mobilebert, macos-executorch)	10s
test-mps-delegate-macos (cmake, mv2, macos-executorch)	10s
test-mps-delegate-macos (cmake, mv3, macos-executorch)	9s
test-mps-delegate-macos (cmake, vit, macos-executorch)	8s
test-mps-delegate-macos (cmake, w2l, macos-executorch)	9s
test-mps-delegate-macos (cmake, ic3, macos-executorch)	11s
test-mps-delegate-macos (cmake, ic4, macos-executorch)	11s
test-mps-delegate-macos (cmake, resnet18, macos-executorch)	8s
test-mps-delegate-macos (cmake, resnet50, macos-executorch)	9s
	28m 9s

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