Fixing how the brightness attribute gets set.

Before this fix, the light groups were being displayed as toggles. This
change tells HA that these light objects are dimmable.

custom_components/luxor/light.py

@@ -5,8 +5,8 @@
 
 from homeassistant.core import callback
 from homeassistant.components.light import (
+ ColorMode,
  LightEntity,
- COLOR_MODE_BRIGHTNESS,
 )
 from homeassistant.exceptions import PlatformNotReady
 from homeassistant.helpers.debounce import Debouncer
@@ -102,13 +102,16 @@ def brightness_to_intensity(brightness: int):
 
 
 class LuxorLight(CoordinatorEntity, LightEntity):
- supported_color_modes = {COLOR_MODE_BRIGHTNESS}
 
  def __init__(self, coordinator, controller, group_id):
  super().__init__(coordinator)
  self.controller = controller
  self.group_id = group_id
  self._attr_unique_id = "LUXOR_LIGHT_{}".format(group_id)
+ color_mode = ColorMode.BRIGHTNESS
+ self._attr_color_mode = color_mode
+ self._attr_supported_color_modes = {color_mode}
+ self._attr_effect = None
 
  async def async_turn_on(
  self, brightness=255, **kwargs