Navbar update

Navbar.js

import Link from 'next/link'; // <- Imported Link from NextJS

export default function Navbar() {
  return (
    <nav className={styles.nav}>
      <Link href="/">Navbar</Link> {/* <- Used here */}
      <div>
        <button>
          <a href="/api/auth/login">Login</a>{" "}
          {/* <- Updated here, we should keep it as an anchor tag for api routes */}
        </button>
      </div>
    </nav>
  );
}