Do you know this problem as well? At home, you sit at your desk or anywhere else with your MacBook and you want to control the light. Of course you could stand up and use the dimmer switch or just use Siri on your Mac. But if you have your fingers on the trackpad anyway, you could also control the light on your Mac.
We Love Lights: Uncluttered Hue app for the Mac Controls in the menu bar
Controls in the menu bar