[DOCS] Add PR template

[suhanipaliwal]

Description

I would like to add a pull request template for this repository. Please assign me this issue under GSSOC'24.

Screenshots

No response

[SauravMukherjee44]

@suhanipaliwal You can work on this issue!
Thanks for choosing our community project. 🙌🏻

✅ For any queries, Please reach out to me here: https://www.linkedin.com/in/sauravmukherjee44/