[style]: Redesign and add more features to footer section

[ShradhaSaxena23]

What's the style idea?

Objective:

Redesign the footer layout with an updated color palette.
Add a "back to top" button for easy navigation.
Ensure the footer is fully responsive across all devices.
Incorporate social media icons and links.

I am eager to take on this issue, as I am a contributor in GSSOCExt 2024 and hacktoberfest . I kindly request that you assign this issue to me.

Add screenshots

Add screenshots

Code of Conduct

• I agree to follow this project's Code of Conduct

[github-actions]

Hello @ShradhaSaxena23!
Thank you for raising this issue.

Please make sure to follow our Contributing Guidelines.
Don't forget to ⭐ our Imagine AI.

Our review team will carefully assess the issue and reach out to you soon!
We appreciate your patience!

[github-actions]

To reduce notifications, issues are locked. Your issue will be unlocked when we add the label, gssoc23.

[rajveeerr]

@ShradhaSaxena23 you can start working on this!!