Added a Sign-off bot

[Yasir761]

Describe your changes

Add a Github Sign-off bot

Screenshots - If Any (Optional)

Issue ticket number and link - If Any

Closes https://github.com/devarshishimpi/staticstorm/issues/7

Checklist before requesting a review

• [x] I have performed a self-review of my code.

• [x] Followed the repository's Contributing Guidelines.

• [x] I ran the app and tested it locally to verify that it works as expected.

• [x] I have starred the repository.

Additional Information (Optional)

[devarshishimpi]

@Yasir761 Please complete the checks while creating the PR and requesting for a review. I have updated the text of the PR to the same.

[Yasir761]

@Yasir761 Please complete the checks while creating the PR and requesting for a review. I have updated the text of the PR to the same.

I have completed the check.