[POC] Testing Manual dispatch

[anupambhatnagar]

What does this PR do?

Adding a workflow with a manual dispatch. This is a test. It does not touch any existing code, unit tests or workflows.

Before submitting

• Did you have fun?
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• Did you read the contributor guideline?
• Was this discussed/approved via a Github issue? (no need for typos, doc improvements)
  • N/A
• Did you make sure to update the docs?
  • N/A
• Did you write any new necessary tests?
  • N/A
• Did you update the changelog? (if needed)
  • N/A

PR review

Anyone in the community is free to review the PR once the tests have passed.
If we didn't discuss your PR in Github issues there's a high chance it will not be merged.