completed oauth implementation on hub and dispatch

apps/dispatch/app/(dispatch)/layout.tsx

@@ -1,16 +1,23 @@
 import type { Metadata } from 'next';
 import Navbar from './_components/Navbar';
+import { useSession } from 'next-auth/react';
+import { redirect } from 'next/navigation';
+import { getServerSession } from '../api/auth/[...nextauth]/auth';
 
 export const metadata: Metadata = {
   title: 'VAR Leitstelle v2',
   description: 'Die neue VAR Leitstelle.',
 };
 
-export default function RootLayout({
+export default async function RootLayout({
   children,
 }: Readonly<{
   children: React.ReactNode;
 }>) {
+  const session = await getServerSession();
+  if (!session) {
+    redirect('/login');
+  }
   return (
     <>
       <Navbar />