Add Support for Mi Purifying Fan
**Device model**
dreame.fan.p2018

**Device name**
Xiaomi Smart Purifying Fan

**Does the device require a MiCloud connection?**
No

**Anything special about the device?**
Does it already work with the plugin with a limited scope? - Yes
- this device is fan + air purifier hybrid. The plugin exposed this device as a fan which works great as it also expose the temperature sensor
- however, since it also doubles as an air purifier, I wish the plugin can expose its air quality sensor and filter life

![MiPurifyingFan-01_1000x jpg copy](https://user-images.githubusercontent.com/66505845/198887402-fdb8f4c1-6735-47ba-ae49-8c060dd2b3ae.jpg)

