Dummy switches don't showup
Hi,

I'm running homebridge on a MacOs machine.
I've connected an rtsp wyse camera and a raspberry http camera streaming mjpeg.

I'm not able to see the dummy switches in the homekit app.

Here is my config.json file:
```
        {
            "name": "CameraUI",
            "port": 8591,
            "auth": "none",
            "language": "en",
            "debug": true,
            "reset": true,
            "mqtt": {
                "active": false
            },
            "http": {
                "active": false,
                "localhttp": false
            },
            "ssl": {
                "active": false
            },
            "options": {
                "videoProcessor": "/usr/local/lib/node_modules/homebridge-nest-cam/node_modules/ffmpeg-for-homebridge/ffmpeg",
                "ffmpegExecPath": "/usr/local/lib/node_modules/homebridge-nest-cam/node_modules/ffmpeg-for-homebridge/ffmpeg"
            },
            "cameras": [
                {
                    "name": "GarageCam",
                    "manufacturer": "Wyze",
                    "motion": true,
                    "doorbell": true,
                    "switches": true,
                    "unbridge": true,
                    "videoConfig": {
                        "source": "-i rtsp://xxxxx:xxxxx@xxx.xxx.x.xx/live",
                        "maxWidth": 0,
                        "maxHeight": 0,
                        "maxFPS": 0,
                        "vcodec": "copy",
                        "audio": true,
                        "debug": true,
                        "socketPort": 8100
                    }
                },
                {
                    "name": "PiZeroCam",
                    "manufacturer": "Raspberry",
                    "model": "PiZero",
                    "motion": true,
                    "doorbell": true,
                    "switches": true,
                    "unbridge": true,
                    "videoConfig": {
                        "source": "-i http://xxx.xxx.x.xx:xxxx/",
                        "maxWidth": 1024,
                        "maxHeight": 768,
                        "maxFPS": 15,
                        "vcodec": "copy",
                        "debug": true,
                        "socketPort": 8101
                    }
                }
            ],
            "platform": "CameraUI"
        }
```

Thanks