Aqara door/ window sensor as a contact sensor in Homebridge 
* **Please explain your feature request in a one or two sentences.**
Would like to know whether would it be possible to make Aqara door/window sensor as a contact sensor for garage door sensor as an alternative rather than using a sonoff DW2 -WiFi sensor?


* **Is your feature request related to a problem? Please describe.**

Been using the sonoff DW2 WiFi sensor quite some time now and the reliability in terms of battery consumption is very bad which makes the sensor goes offline within a week of usage with new batteries..
Been testing with aqara door sensor now and it’s way much reliable. The only problem is I can’t make it to sync with my garage door state (open or close). 

* **Any particular eWeLink devices that this relates to?**
* DW2 WiFi 



* **Anything else?**


