Add support for New Widetech Dehumidifier 60L
**Device model**
nwt.derh.60l

**Device name**
NWT Internet Dehumidifier 60L

**Does the device require a MiCloud connection?**
Probably ? (released in 2023 according to this page https://home.miot-spec.com/s/nwt.derh.60l)

**Anything special about the device?**
- Has clothes drying function (max speed and fan when chosen)
- Has water full features (notify when the drain bucket is full and stop the device)
- Has defrosting feature (stop operation when the coil is frozen)