Add light presets common module to devices. (#907)

Adds light preset common module for switching to presets and saving presets.
Deprecates the `presets` attribute and `save_preset` method from the `bulb` 
interface in favour of the modular approach.  Allows setting preset for `iot` 
which was not previously supported.

kasa/smart/smartdevice.py

@@ -338,7 +338,6 @@ class SmartDevice(Device):
                 module._initialize_features()
             for feat in module._module_features.values():
                 self._add_feature(feat)
-
         for child in self._children.values():
             await child._initialize_features()