https://millo-l.github.io/WebRTC-%EA%B5%AC%ED%98%84%ED%95%98%EA%B8%B0-1-N-SFU/#3-%EB%8A%90%EB%82%80-%EC%A0%90 https://github.com/mooyaho-webrtc/mooyaho
https://github.com/mqttjs/MQTT.js/#mqttclientstreambuilder-options
- prisma package로 분할
- env, prettier , lint 공통 package 추가
- wrtc 활용 connection 유지 방법 생각하기