Homebridge v2.0 support

[hanwalt]

Although it is unclear when Homebridge v2.0 will be released I am concerned that some plugins are not ready vor v2 and will break up. As I read in another issue homebridge-tado-platform will break with v2.0

I know that @seydx didn`t update the plugin quite a long time (maybe he sold his Tado stuff?) but there is still hope that there will be an updated version because the plugin integration in Homekit is much better than the native one!

So please dear @seydx be so kind and do some favor for some eager homebridge-tado-platform users!