Notifications for battery percentage below threshold X
### Description

Be able to define battery percentage below threshold X in plugin settings and be able to push notifications from Home app when that threshold is met.

### Proposed solution

Be able to define battery percentage below threshold X in plugin settings and be able to push notifications from Home app when that threshold is met.

### Alternatives

N/A

### Device data

I have some Ring cameras that are battery only and it would be good to get notified from Home app when that threshold is met/below.