executorch Implement mm op for Arm backend

Add legalization from aten.mm to TOSA MatMul for FP32 & INT8 types
Add tests for main and base inference
Add an annotator for aten.mm in the quantizer

Aug 09 '24 10:08 tom-arm

:link: Helpful Links

:test_tube: See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/4628

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As of commit 182571816d1617af4878c6697730bb3c12196267 with merge base 5d151d05bd9da61110941247d78f23ba911e4d32 (): :green_heart: Looks good so far! There are no failures yet. :green_heart:

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Aug 09 '24 10:08 pytorch-bot[bot]

@pytorchbot label 'partner: arm'

Aug 09 '24 10:08 tom-arm

@pytorchbot label 'ciflow/trunk'

Aug 12 '24 10:08 tom-arm

Can't add following labels to PR: ciflow/trunk. Please ping one of the reviewers for help.

Aug 12 '24 10:08 pytorch-bot[bot]

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Aug 13 '24 22:08 facebook-github-bot

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