[Feature]: Add Responsive Navbar Toggle (for mobile view)

[MD-IRFAN-RAJ]

So, what is it about?

Currently, the navigation bar doesn’t adjust for smaller screens.
Create a responsive navbar that collapses into a hamburger menu on mobile devices.

Requirements:

• Add a hamburger icon for small screens.

• Toggle menu visibility using simple JavaScript or CSS.

• Ensure the menu closes automatically after selecting a link.

Code of Conduct

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