Added GROUP, ZONE classes to handle Tasks and Zones

GROUP will be a class abstraction for the DCS Group class, incorporating
the Controller for tasks.

ZONE will be a class abstraction for a trigger zone.

Each of these classes will have properties to further emulate tasks, and
execute all kind of actions on the object.

Moose/PickupTask.lua

@@ -3,6 +3,7 @@
 -- @parent TASK
 
 Include.File("Task")
+Include.File("Cargo")
 
 PICKUPTASK = {
   ClassName = "PICKUPTASK",