[Feat]: Bot for automatic thank you response on PR merge

[maniacedoc]

Is there an existing issue for this?

• I have searched the existing issues

Feature Description

This github bot will automatically respond giving a thankyou note for the merging of PR.

Use Case

This will motivate our contributors to keep doing the good work and also save time of the project admin to individually comment on each pr after merging them.

Benefits

No response

Priority

High

Agreements

• I agree to follow this project's Code of Conduct
• I'm a GSSoC contributor
• I'm a Hacktoberfest contributor
• I want to work on this issue
• I'm willing to provide further clarification or assistance if needed.

[github-actions]

Thank you for creating this issue! 🎉 Your issue will soon be reviewed by either the PA or a mentor. Please note that Level 1 is temporary and can be changed during the review. In the meantime, please make sure to provide all the necessary details and context. If you have any questions or additional information, feel free to add them here. Your contributions are highly appreciated! 😊

You can also check our CONTRIBUTING.md for guidelines on contributing to this project.

[maniacedoc]

@Tejashri-Taral as I made a github bot for automatically commenting on new issues created, I want to make a bot for automatically commenting on PRs merged. Please add the necessary labels and assign this to me

[Tejashri-Taral]

@maniacedoc as this contribution comes under documentation . I cant give further level for this task. I can merge the PR with only gssoc label.
you will not get any points for it. Hope you understand - please let me know if you want to work on it.