Move to single switch and UI configurable (preparation for PR into homeassistant/core)

[basnijholt]

Just leaving this here for feedback.

Inspired by #114, I have heavily simplified the setup. Now it's just a single switch that can take all of the settings.

I plan to add this to core soon, as a replacement for Flux.

P.S., don't mind the name switching from Circadian -> Adaptive, I just did a find + replace all to have the original circadian_lighting and this code side by side in my config.

TODO:

• make it work well with groups
• set all the correct UI elements
• integrate the config_validation option parsing
• respond to events instead of state changes, then don't do anything on HA restart

[basnijholt]

This is how the setup looks in the UI:

[ChessSpider]

while you're still busy doing awesome work, i noticed you added a sunset_time and sunrise_time. I assume this overrides the sunset/sunrise times for the configured location.

I was wondering, is it much work to also add (or change it into) a min_sunset_time and max_sunrise_time ? So the lights will be on longer if the days are longer, but with long nights it will keep a certain minimum day?