Create a buck genrule for schema_generated.h

[derekxu]

Summary: Create a buck genrule for schema_generated.h

• Genrule example: https://www.internalfb.com/code/fbsource/[6e2ed7840cb2]/fbcode/executorch/schema/targets.bzl?lines=20-41

This is needed to add dependency of qualcomm/schema_generated.h into the ET-QNN for Meta Wearable app

Differential Revision: D60456032

[pytorch-bot[bot]]

:link: Helpful Links

:test_tube: See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/4463

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As of commit 01a3d20204d9324bd06ed7a7dba61bdc3b715e11 with merge base b7c8378d57b0e18d30ff30197125a89744d16d70 (): :green_heart: Looks good so far! There are no failures yet. :green_heart:

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[facebook-github-bot]

This pull request was exported from Phabricator. Differential Revision: D60456032

[cccclai]

Stale PR