✨ Convert scf.while to jeff

[denialhaag]

Description

This PR adds conversion patterns for converting between scf.while and jeff.while.

This PR should not be merged before PennyLaneAI/jeff-mlir#23 is merged and released.

Fixes #1707

Checklist

• The pull request only contains commits that are focused and relevant to this change.
• I have added appropriate tests that cover the new/changed functionality.
• I have updated the documentation to reflect these changes.
• I have added entries to the changelog for any noteworthy additions, changes, fixes, or removals.
• I have added migration instructions to the upgrade guide (if needed).
• The changes follow the project's style guidelines and introduce no new warnings.
• The changes are fully tested and pass the CI checks.
• I have reviewed my own code changes.

[coderabbitai]

Caution

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✨ Finishing Touches

✨ Simplify code

• Create PR with simplified code
• Commit simplified code in branch jeff-while

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

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