examples: Add navigator assistant websocket example

[RaulTrombin]

This example explain how to connect to navigator assistant and receive/send commands to it. User can display live temperature data and control userleds.

Extension details for test:

raulelektron.blueos_navigator_assistant

Navigator Assistant

latest

{
  "ExposedPorts": {
    "8080/tcp": {}
  },
  "HostConfig": {
    "Privileged": true,
    "PortBindings": {
      "8080/tcp": [
        {
          "HostPort": ""
        }
      ]
    }
  }
}

[patrickelectric]

The service is not public yet. So it's better to wait before merging.

[RaulTrombin]

The service is not public yet. So it's better to wait before merging.

Updated, can you merge it? @patrickelectric