Disable push notifications when doors open/close 
**Is your feature request related to a problem? Please describe:**
I find the push notifications when the door opens or closes to be annoying. It would be greatly appreciated if there was a setting in homebridge that can disable it for everyone in my household.

**Describe the solution you'd like:**
An option that enables a global disabling/enabling of push notifications

**Describe alternatives you've considered:**
Disabling it on a one on one basis throughout my homes devices