SNZB-01 switch support

[fresnoboy]

Wim, any chance we could see support for the Sonoff SNZB-01 pushbutton switch? Deconz supports it, but when added, in HS it just has a set of values that change depending on how the button is pushed.

The values are:

1002 is single click
1004 is double click (On)
1003 is 3 sec hold

The value never returns to 0, it stays on whatever the last press was, but the update time changes when the button is pressed.

[w.vuyk]

That is all the pushbutton does. All switches work that way, it sets the value of the button used. If you need an event that responds when a button is pressed, make sure to trigger it on "Has its value SET to", not changed....