Enable HomeLink and Autopark (Summon)

[virgilm]

I'm sure this can be done better (like setting up and keeping a websocket alive for all commands) and this is missing pretty much all error handling (callbacks, etc.), but it works just fine for me.

Abort is not implemented yet, so Summon will stop just in case there is an obstacle in front or when stopped with the remote/handle touch.

Let me know if this is of interest to you, and I can fix some of these issues. My first JS ever, so bear with me :)