feat (login page): add a sign in / log in page

components/Sidebar.tsx

@@ -1,6 +1,7 @@
 "use client";
 
 import { useRouter, usePathname } from "next/navigation";
+import { signOut } from "next-auth/react";
 import DragonEye from "@/components/DragonEye";
 import {
     LayoutDashboard,
@@ -26,8 +27,7 @@ export default function Sidebar() {
     const pathname = usePathname();
 
     const handleLogout = () => {
-        sessionStorage.clear();
-        router.push("/");
+        signOut({ callbackUrl: "/" });
     };
 
     return (