[Bug] With mode: "client" in configuration zenoh-bridge-ros2dds remain in peer mode

[JEnoch]

Describe the bug

Using such a config file:

{ mode: "client" }

zenoh-bridge-ros2dds is not using the client mode, but the peer mode.

Bug introduced in #49

To reproduce

1. create a conf.json5 file as such:

   { mode: "client" }

2. Start a Zenoh router: zenohd
3. Start a bridge with the config file: zenoh-bridge-ros2dds -c conf.json5
4. Check the bridge mode as discovered by the bridge at http://localhost:8000/@/router/local (see "whatami" value)

System info

• commit c787831