add ci job for mps

[cccclai]

Add a ci job for mps backend

[pytorch-bot]

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❗ 1 Active SEVs

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❌ 3 New Failures

As of commit 954eaaf with merge base 8f12da1 ():

NEW FAILURES - The following jobs have failed:

• Lint / lintrunner / linux-job (gh)
  >>> Lint for examples/models/llama2/source_transformation/sdpa.py:
• pull / unittest / linux / linux-job (gh)
  examples/models/llama2/tests/test_simple_sdpa.py::SDPATest::test_simple_sdpa
• pull / unittest / macos / macos-job (gh)
  examples/models/llama2/tests/test_simple_sdpa.py::SDPATest::test_simple_sdpa

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