Add an Automate thank you message on PR Merging

[Adez017]

Hi @supriya46788,

I’d like to propose adding a workflow that automatically sends a custom thank-you message whenever a PR gets merged. This would not only highlight and appreciate contributors for their efforts but also encourage more engagement and contributions to the project.

[github-actions]

Thank you for raising this issue!

We'll review it as soon as possible. Kindly Star the repo ⭐ We truly appreciate your contributions! ✨

Meanwhile make sure you've visited the README.md, CONTRIBUTING.md, and CODE_OF_CONDUCT.md before creating a PR for this. Also, please do NOT create a PR until this issue has been assigned to you. 😊