Add "Back to Top" Scroll Button in README

[T-Fathima]

Is your feature request related to a problem? Please describe.
Currently, the README file does not include a "Back to Top" button, making it difficult for users to navigate back to the beginning after scrolling through lengthy sections. Adding a "Back to Top" link at the end of readme file will improve navigation, providing a better user experience for readers.

Describe the solution you'd like
Insert a "Back to Top" link or button at the end of readme file to allow users to quickly return to the top of the README.

Additional context
@Devasy23 I would like to work on it.
Please assign it to me under gssoc-ext and hacktoberfest.

[arti3104]

I would like to work on this project please aassign it to me.