Replace switch by heater cooler for Air Fryer 
So I have just purchased a [Xiaomi Air Fryer](https://home.miot-spec.com/spec?type=urn:miot-spec-v2:device:air-fryer:0000A0A4:careli-maf02:1) with identifier `careli.fryer.maf02`.

**Everything works great, but I was wondering if is it possible to use the heater cooler accessory switch to turn on/off heating, instead of an additional switch?**
As this model supports target temperature, the default heater cooler HomeKit accessory already has a tiny switch to enable heating/cooling.
On the current implementation, only the main additionnal button turns the fryer on/off.
The heater cooler switch does nothing.
![image](https://user-images.githubusercontent.com/3419988/178968100-54f2a885-4c79-4fa3-92b3-7ef82f5d90a6.png)

**Additionally, I was wondering if it could be possible to support current temperature in the heater cooler?**
It always seems to return 0.0 degrees when heating or off. 
Would it be possible to return the target temp as the current temp when heating?
I noticed the specs as reference to a `custom:work-temp` property.

**Finally, there is a "remaining time" Lux sensor that is always shown, whether the heater is on or off.**
Can it be temporary hidden if fryer is off? I don't really know if HomeKit supports this natively.

Many thanks!