Add Dahua VTO support

[toroff]

Is it possible to add support for VTO. It is necessary to open the door and track the click of a button.

[psyciknz]

Sorry for the delay. What sort of support? Events received? Or actions?

Also remember I'll be creating it blind.

If it's events, and the're json like the IVS ones, if you send me the json string I can look at it.