server: add debug message for WS connection

server/src/bin/letterbox-server.rs

@@ -158,6 +158,7 @@ async fn start_ws(
         connection_tracker, ..
     }): State<AppState>,
 ) -> impl IntoResponse {
+    info!("intiating websocket connection for {addr}");
     ws.on_upgrade(async move |socket| connection_tracker.lock().await.add_peer(socket, addr).await)
 }