Added unauthorizedpage and path in main

frontend/src/Pages/UnauthorizedPage.tsx

@@ -0,0 +1,18 @@
+import Button from "../Components/Button";
+
+export default function UnauthorizedPage(): JSX.Element {
+  return (
+    <div className="flex flex-col items-center justify-center min-h-screen bg-white">
+      <h1 className="text-[30px]">Unauthorized</h1>
+      <a href="/">
+        <Button
+          text="Go to Home Page"
+          onClick={(): void => {
+            localStorage.clear();
+          }}
+          type="button"
+        />
+      </a>
+    </div>
+  );
+}

frontend/src/main.tsx

@@ -30,6 +30,7 @@ import AdminProjectStatistics from "./Pages/AdminPages/AdminProjectStatistics.ts
 import AdminProjectViewMemberInfo from "./Pages/AdminPages/AdminProjectViewMemberInfo.tsx";
 import AdminProjectPage from "./Pages/AdminPages/AdminProjectPage.tsx";
 import NotFoundPage from "./Pages/NotFoundPage.tsx";
+import UnauthorizedPage from "./Pages/UnauthorizedPage.tsx";
 
 // This is where the routes are mounted
 const router = createBrowserRouter([
@@ -146,6 +147,10 @@ const router = createBrowserRouter([
     path: "/adminManageUser",
     element: <AdminManageUsers />,
   },
+  {
+    path: "unauthorized",
+    element: <UnauthorizedPage />,
+  },
 ]);
 
 // Semi-hacky way to get the root element