Add tests to Cadence examples

[mcremon-meta]

Summary: As titled. Adds deepfilternet, encodec and tacotron. Note that some of them cannot run yet and are under investigation, checking them in so that Cadence can see it on their side.

Differential Revision: D64404190

[pytorch-bot]

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🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/6233

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❌ 1 New Failure

As of commit 5665787 with merge base 517fddb ():

NEW FAILURE - The following job has failed:

• Lint / lintrunner / linux-job (gh)
  >>> Lint for examples/cadence/models/deepfilternet.py:

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This pull request was exported from Phabricator. Differential Revision: D64404190

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This pull request was exported from Phabricator. Differential Revision: D64404190

[facebook-github-bot]

This pull request was exported from Phabricator. Differential Revision: D64404190

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This pull request was exported from Phabricator. Differential Revision: D64404190

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[github-actions]

Looks like this PR hasn't been updated in a while so we're going to go ahead and mark this as Stale.
Feel free to remove the Stale label if you feel this was a mistake.
If you are unable to remove the Stale label please contact a maintainer in order to do so.
If you want the bot to never mark this PR stale again, add the no-stale label.
Stale pull requests will automatically be closed after 30 days of inactivity.