chore: fix clippy

src/types.rs

@@ -0,0 +1,9 @@
+use futures_channel::mpsc::UnboundedSender;
+use tungstenite::Message;
+use std::net::SocketAddr;
+use std::collections::{HashMap, BTreeMap};
+use std::sync::{Mutex, Arc};
+
+pub type Tx = UnboundedSender<Message>;
+pub type PeerMap = Arc<Mutex<HashMap<SocketAddr, Tx>>>;
+pub type RoomMap = Arc<Mutex<BTreeMap<String, BTreeMap<String, SocketAddr>>>>;