Please add compatibility for the sonoff ZbCurtain
* **Please explain your feature request in a one or two sentences.**

Please add compatibility for the sonoff ZbCurtain

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

No problem - but it'd be great to have this just work

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

Sonoff ZBCurtain

* **Anything else?**

Not really, hope you can add it to the integration! Thank you for your hard work!