Add Boolean operations to the node tree

[chuiliuyiyi]

I plan to add Boolean operations to the game. Can you help me add Boolean operations.

[rpaladin]

Armory also supports a variety of Boolean related logic nodes.

[MoritzBrueckner]

As @ rpaladin correctly pointed out, Armory already has these capabilities. In logic nodes for example there's the Invert Boolean node and the Gate note (representing a logic gate plus some comparison functions). In Haxe you obviously don't need any Armory-specific functionality since Haxe already has all the basic boolean operators.