feat: Basic trip planner agent

agent/uis/trip-planner/book-restaurant/index.tsx

@@ -0,0 +1,15 @@
+import { TripDetails } from "../../../trip-planner/types";
+
+export default function BookRestaurant({
+  tripDetails,
+  restaurantName,
+}: {
+  tripDetails: TripDetails;
+  restaurantName: string;
+}) {
+  return (
+    <div>
+      Book restaurant {restaurantName} for {JSON.stringify(tripDetails)}
+    </div>
+  );
+}