Add auth demo

src/Website/app/routes/logout.tsx

@@ -0,0 +1,10 @@
+import { redirect } from "react-router";
+import { destroySession, getSession } from "../lib/auth.server";
+import type { Route } from "./+types/logout";
+
+export async function loader({ request }: Route.LoaderArgs) {
+  const session = await getSession(request);
+  return redirect("/", {
+    headers: { "Set-Cookie": await destroySession(session) },
+  });
+}