Zeus functionality

[Bubbus]

Tried to pull-req to a new branch, haven't found out how so I'm pointing this at master instead. Can re-request to a staging branch if you create one, just hit me up.

Adds new things for Zeuses:

• Godmode vs. most forms of damage.
• Ability to teleport directly under the Zeus camera.
• Hear player ACRE speech at camera pos.
• Spawn gearscripted AI infantry + vehicles in-game.
• Teleports and spawns controlled by on-screen UI.

To use:

Put this in the init field of a player unit:

[this, true, true] call ca_fnc_registerZeusPlayer;

Where arg#2 is gearscript spawner toggle on/off and arg#3 is teleporting toggle on/off. Godmode is applied by default when this function is called.

To configure the gearscript spawner, edit ca\zeus\zeus_ui\fn_zeusSetupUnits.sqf. Comments added as guidance.

Potential future improvements:

• Protect Zeus against ALL forms of damage.
• Make UI scale-aware, so it sticks to the bottom corner at all scales.
• Make UI observer-mode aware, e.g. disappears when Zeus cam is not in edit-mode.