Summary: feat(rgbwc_lightbulb): move Daybetter to rgbcw (part 2)
Should have been part of the previous commit, but I committed files
individually from the editor instead of together as an atomic commit.
Issue #5880 requested this device to be specifically added to rgbwc_lightbulb,
but the user's detailed justification was that one of the scene's matches.
The scenes can be arbitrarily written through the text entity, so matching of scenes
is secondary to other concerns such as the direction of the color temperature.
Issue #6293
Jason Rumney