In-Home doorbell switch not appearing in Home-app
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# Bug Report

### Describe the Bug
<!-- ✍️edit: --> I want to disable the in-home doorbell using an automation, but i am not able to turn the doorbell on or off in the Apple home-app. In a previous version there was a switch that i could use to toggle the in-home doorbell. 

### To Reproduce
Steps to reproduce the behavior:
 - Start Homebridge
 - Open PLUGINS-tab 
 - Open settings for this plugin
 - Click OPTIONAL CONFIGURATION
 - Uncheck 'HIDE IN-HOME DOORBELL SWITCH'
 - Click SAVE & restart Homebridge

### Expected behavior
<!-- ✍️edit: --> I expect to see a newly added switch to toggle the in-home doorbell on/off

<!--### Screenshots/Logs --!>
<!-- ✍️edit: If applicable, add screenshots and log output to help explain your problem. -->

### Homebridge Ring Config
Post homebridge-ring platform config  _without sensitive information_

```
        {
            "refreshToken": "eyJhb.......",
            "hideCameraMotionSensor": true,
            "hideCameraSirenSwitch": true,
            "hideInHomeDoorbellSwitch": false,
            "hideAlarmSirenSwitch": true,
            "hideUnsupportedServices": true,
            "avoidSnapshotBatteryDrain": true,
            "platform": "Ring"
        }

```

### Environment
<!-- ✍️edit: -->
 - OS: Debian GNU/Linux Buster (10)
 - Node.js: v14.15.3 <!-- run `node -v` to get current version -->
 - NPM: 6.14.9 <!-- run `npm -v` to get current version -->
 - homebridge-ring: 9.14.2
 - homebridge: 1.1.7
