roadmap discussion

- Protocol capability, access capability: MQTT 3.3.1; MQTT 5.0; TCP, WS, WSS, SSL/TLS, etc.;
- Meta module: Jraft functionality enhancement;
- Feature development: lookup components to solve the problem of state lookup and clientID conflict detection; metadata such as first-level topics and wildcards are automatically stored and updated;
- Security: password, TLS access authentication; authority management;
- Containerization, elastic expansion and contraction;
- Observable: dashboard, Prometheus monitoring (indicator definition), message trace;
- Ecology, data flow ability, rule engine: flow to RocketMQ, Kafka, time series database, EB;
- Administrative tools: mqtt admin tool;
- Real-time data collection: device online and offline time, device action;
- System Topic