[Feature request] add effects support for Shelly RGBW2
The Shelly RGBW2 has some built in effects.  It appears they are as follows:

Supported values for effect are:
1 - Meteor shower
2 - Gradual change
3 - Breath
4 - Flash
5 - Gradual On/Off
6 - Red/Green change

And it would be great if we could access these affects in scenes and automations. Would that be something that would be possible?
