Add UUID packet upon WebSocket connection

Added a command to send a UUID packet to each newly connected client in index.ts file. By doing this, a client can instantly receive their own UUID upon connection, which can be useful in managing individual client data or behaviors.

src/index.ts

@@ -49,6 +49,7 @@ const server = Bun.serve<ClientData>({
             logger.info(`${webSocket.data.uuid} connected to room ${webSocket.data.roomId}`)
             webSocket.subscribe(webSocket.data.roomId)
 
+            webSocket.send(new SimplePacket("UUID", webSocket.data.uuid).toString())
             webSocket.send(new SimplePacket("INFO", roomManager.getRoom(webSocket.data.roomId)).toString())
             webSocket.publish(webSocket.data.roomId, new SimplePacket('JOIN', webSocket.data.uuid).toString())
          } else {