Implement "ding" property for Ring Intercom
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# Feature Request

### Description
Imlement the "ding" skill for Ring Intercom devices. The lock/unlock property is working great with homebridge so far. it would really be cool, if the "ding" for the doorbell could also be implemented.

### Describe the solution you'd like
Maybe the work of tsightler for ring-mqtt would be helpful for implementing this feature:
https://github.com/tsightler/ring-mqtt/blob/dev/devices/intercom.js

### 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
