MQTT Events for Bifrost

New Feature Request

I would love for bifrost to have it's own MQTT messages for the actions taken.

For example, a room/group of lights are controlled and color changes. Send an MQTT event for that so I can pickup the change and use that to drive further automations.

Some examples of automations:

- Turn off adaptive lighting from other sources
- Set RGBW LED strips (Non Hue / Non Zigbee / etc...) to a color profile match (I have RGBW controllers from Shelly that are joined via WiFi and controlled in Home Assistant. This would allow for me to match them to lights when bifrost makes a change.

MQTT Message: bifrost/group_name/event (JSON with the details)