[ET-VK] Implement expand

[SS-JIA]

Stack from ghstack (oldest at bottom):

• [ET-VK][ez] Allow partitioner to filter by source nn.Module type name #13644
• -> [ET-VK] Implement expand #13643
• [ET-VK] Add high dim support for permute #13642

Title says it all! Implement expand, but with buffer only support for now.

Differential Revision: D80962720

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/13643

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❌ 1 New Failure, 2 Unrelated Failures

As of commit 3642e86 with merge base 7dab7c1 ():

NEW FAILURE - The following job has failed:

• Build documentation / build (buck2) / Build doc (gh)
  At least one of the pre-conditions you specified did not hold

BROKEN TRUNK - The following jobs failed but were present on the merge base:

👉 Rebase onto the `viable/strict` branch to avoid these failures

• pull / unittest / macos / macos-job (gh) (trunk failure)
  RuntimeError: Command bash /Users/ec2-user/runner/_work/_temp/exec_script failed with exit code 1
• pull / unittest-editable / macos / macos-job (gh) (trunk failure)
  RuntimeError: Command bash /Users/ec2-user/runner/_work/_temp/exec_script failed with exit code 1

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This pull request was exported from Phabricator. Differential Revision: D80962720

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This pull request was exported from Phabricator. Differential Revision: D80962720