One Homebridge Instance, Multiple Homes?
### Current Situation

Hi,

I'm living in a House with two appartments. We are curently trying to setup a Camera at the Door, using a Raspberry PI with a USB Camera running Homebridge. Both appartments have their own Home. 
My current Plan is to use the "Homebridge GPIO Doorbell" and "Homebridge Camera FFmpeg" Plugins to realize this.
The GPIO Doorbell Plugin is used for the Buzzer, the Camera FFmpeg for the Camera. Should someone press one of the Buzzers, the corresponding Home should notify us so we can look at the Camera.

My problem is, that I don't know how to set this up in two Homes using one Homebridge Instance. I have currently set this up for one Home and it works fine. When trying to add both the Buzzer accessorie and the Camera Platform to the same ChildBridge though, I get an Error Message saying "You can only group accessories of the same type in a child bridge."

My initial Plan was to create two Buzzer accessories and two Camera Platforms, within two Child Bridges (one Buzzer, one Camera in each Child Bridge. One ChildBridge per Home). Is this not the right way to solve this?

### Logs

```markdown
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```


### Configuration

```json
"accessories": [
        {
            "name": "DoorBuzzerUpstairs",
            "gpioPin": 11,
            "throttleTime": 1000,
            "negateInput": false,
            "enableOutput": false,
            "enableHttpTrigger": true,
            "httpTriggerUrl": "http://127.0.0.1:8087/doorbell?CamDoor",
            "accessory": "GpioDoorbell"
        }
    ],
    "platforms": [
        {
            "name": "Config",
            "port": 8581,
            "platform": "config"
        },
        {
            "name": "Camera",
            "porthttp": 8087,
            "cameras": [
                {
                    "name": "CamDoor",
                    "doorbell": true,
                    "unbridge": false,
                    "videoConfig": {
                        "source": "-i http://127.0.0.1:8081/",
                        "maxWidth": 640,
                        "maxHeight": 480,
                        "maxFPS": 15,
                        "audio": false
                    }
                }
            ],
            "platform": "Camera-ffmpeg"
        }
    ]
```


### Environment

- OS: 
- Software:
- Node:
- npm:


### Process Supervisor

hb-service

### Additional Context

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