Add skeleton pages for both login and signup page

Author: LemonDrew

frontend/src/app/auth/login/page.tsx

@@ -0,0 +1,10 @@
+import LoginForm from "@/app/components/auth/LoginForm";
+
+
+export default function LoginPage() {
+    return (
+        <div className="h-screen flex items-center justify-center">
+            <LoginForm />
+        </div>
+    )
+}

frontend/src/app/auth/signup/page.tsx

@@ -0,0 +1,7 @@
+export default function SignUpPage() {
+    return (
+        <div>
+            SignUp Page
+        </div>
+    )
+}