feat(controller): add mapping attribute and deprecate custom contro…

…llers

Now the mapping attribute can be used in any Controller type, so no need of CustomLightController for example, use LightController instead. We can also now use the mapping attribute for device controllers like E1810Controller or MFKZQ01LMLightController for example.

related to #98

docs/examples/index.md

@@ -274,7 +274,7 @@ livingroom_light_on:
 
 livingroom_light_off:
   module: controllerx
-  class: E1810Controller
+  class: LightController
   controller: sensor.livingroom_controller_action
   integration: z2m
   light: light.livingroom