Elgato Key Light Mini Support

[GaryGSC]

Just wanted to let others know that this library works beautifully with the Key Light Mini.

I can control brightness and temperature. The library correctly identifies the minimum and maximum temperatures supported. The Identify service works, too.

The only thing that seems to be missing is the battery level, but since my lights are always plugged in, that didn't matter to me.

Proposed changes

• List Key Light Mini as a supported device in the README (Can we consider it compatible and tested?)
• Get battery information

[frenck]

Nice :)

Wasn't aware of this device. Your issue made me order one, which I received today.

I've noticed some changes in general in newer Elgato firmware, that I can apply/add to this library and discovered some new API endpoints too.

For the mini, there is a lot to support/pull out of it. I've been able to get all battery and charging information and got into the battery-related settings as well (controlling bypass/studio mode, energy-saving behaviors/settings, and stuff like that).

Will extend the library with all the found information and controls.

../Frenck

[frenck]

Finished full support in #697 and #698