Initial Contribution for OH2 Max!Cube binding

Signed-off-by: Marcel Verpaalen <marcel@verpaalen.com>
I am actually wondering whether we should call this binding the "max" binding only as a namespace (and the classname here as well).
Considering the MAX!Cul binding for openHAB 1.x, I would actually hope that the thing descriptions for the devices make sense in both cases. Effectively, the MAX!Cul support would only an additional bridge type with an according handler.