Running with Cargo

Run standalone by meta-service
```
cargo run --package cmd --bin meta-service -- --conf=config/meta-service.toml
```
If the following output is displayed, it indicates that the meta-service has started successfully:
Run standalone by mqtt-server
```
cargo run --package cmd --bin mqtt-server -- --conf=config/mqtt-server.toml
```
If the following output is displayed, it indicates that the mqtt-server has started successfully:
Run standalone by journal-server
```
cargo run --package cmd --bin journal-server -- --conf=config/journal-server.toml
```
The following output indicates that the journal-server has started successfully:

Running with Cargo ​