Option to support Critical Alerts
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# Feature Request

### Description
The Critical Alerts feature is available on the Home app to passthrough alerts despite the users Focus mode OR vibrate settings.  The Ring app itself sends alarm notifications this way so that if a user has his phone on silent and Do Not Disturb it will still play a sound.  Can this option be added so that alarm notifications from the homebridge-ring plugin sent through the Home app are also sent via Critical Alert?

### Describe the solution you'd like
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### Describe alternatives you've considered
<!-- ✍️--> Have you considered any alternative solutions or workarounds?

### Device data
<!-- ✍️-->  If you are requesting a new device be added to homebridge-ring, please follow the instructions in https://github.com/dgreif/ring/wiki/Data-Discovery and include the output here
