[Feature] Add Scroll to Top button

[SurajPrakash24]

Description

It will be very efficient for user to directly go to top of page with just one click. This button will be fixed on the page so while scrolling, it will not move.

Objective

-Implemented a "Scroll to Top" button that appears when the user scrolls down more than 200 pixels.
-Button will smoothly scroll the page back to the top when clicked.
-Add responsive styling for better user experience

@Kritika30032002 plz assign this issue to me under gssoc-ext level 2.

Screenshots

No response

Checklist

• I have starred the repository
• I have checked the existing issues
• I have read the discussion tab thoroughly and got the project idea
• I am willing to work on this issue (optional)

[github-actions]

Hey, @SurajPrakash24 welcome to Top_Secrets repository.🎊 Thank you so much for taking the time to point this out.🙌