feat: setup protected routes

src/auth.ts

@@ -3,4 +3,9 @@ import Authentik from 'next-auth/providers/authentik';
 
 export const { handlers, signIn, signOut, auth } = NextAuth({
   providers: [Authentik],
+  callbacks: {
+    authorized: async ({ auth }) => {
+      return !!auth;
+    },
+  },
 });