fix peer_remove & peer_add event handler (#27)

easytier-core/src/connector/manual.rs

@@ -220,8 +220,8 @@ impl ManualConnectorManager {
                 log::warn!("peer conn removed: {:?}", conn_info);
             }
 
-            GlobalCtxEvent::PeerAdded(..) => todo!(),
-            GlobalCtxEvent::PeerRemoved(..) => todo!(),
+            GlobalCtxEvent::PeerAdded(..) => {}
+            GlobalCtxEvent::PeerRemoved(..) => {}
         }
     }