Velux Active Integration to Homebridge

First of all - big thanks to nougad for reverse engineering how the velux api works.

It was the basis of this module.

https://github.com/nougad/velux-cli/blob/master/velux-protocol.md

I know that you can directly add the Velux Active to Apple homekit, but at some
point I was so fed up with Homekit since sometimes automations wouldn't work for
some stupid reason - therefore I decided to integrate everything in node-red and
so I needed this plugin to control the velux devices I have.

Maybe it is also useful for some of you too :)