chore: add spawn single node example

ant-node/examples/spawn_node.rs

@@ -0,0 +1,33 @@
+// Copyright 2025 MaidSafe.net limited.
+//
+// This SAFE Network Software is licensed to you under The General Public License (GPL), version 3.
+// Unless required by applicable law or agreed to in writing, the SAFE Network Software distributed
+// under the GPL Licence is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. Please review the Licences for the specific language governing
+// permissions and limitations relating to use of the SAFE Network Software.
+
+use ant_node::spawn::node_spawner::NodeSpawner;
+use autonomi::Multiaddr;
+use std::str::FromStr;
+
+#[tokio::main]
+async fn main() {
+    // Using the genesis node as a bootstrap node for example
+    let bootstrap_peers = vec![
+        Multiaddr::from_str("/ip4/209.97.181.193/udp/57402/quic-v1/p2p/12D3KooWHygG9a7inESky2KpvHQmbX5o2UC8D29B5njdshAcv1p6")
+            .expect("Invalid multiaddr")
+    ];
+
+    let running_node = NodeSpawner::new()
+        .with_initial_peers(bootstrap_peers)
+        .spawn()
+        .await
+        .expect("Failed to spawn node");
+
+    let listen_addrs = running_node
+        .get_listen_addrs_with_peer_id()
+        .await
+        .expect("Failed to get listen addrs with peer id");
+
+    println!("Node started with listen addrs: {listen_addrs:?}");
+}