AGM_SwitchUnits, Insurgency-esque unit switching

SwitchUnits is a module that enables the ability for one side to switch to AI units. In a way it was possible in obviously the best!!! Arma 2 / ACE Mission: Insurgency by Fireball.

Allowing other players to perform as enemies even during a coop mission increases the *authenticity* of the enemy (hence my idea of maybe adding it it to AGM).

The greatest USP of having this as a module is, that existing (dynamic) missions (Enemy Assault, Patrol Ops, Invade & Annex etc...) don't need to be reworked to add all dynamicly spawned units as curator units and control them as Zeus. It would just be: drop in the module, choose the side and you'd be ready to go.

![2014-10-13_00001](https://cloud.githubusercontent.com/assets/1235520/4609827/984c6c3e-52a6-11e4-9803-beb75140d9ed.jpg)


![2014-10-13_00002](https://cloud.githubusercontent.com/assets/1235520/4609828/9c95049a-52a6-11e4-85db-117e724b612a.jpg)



In it's current state it gives all players of a side the ability to control AI.

**Todo:**
- [ ] Sync playable units to the module
- [ ] Don't allow switching when in n meters around the opposing side
- [ ] Restrict to player names / ID's (?)
- [ ] Add ratio of players vs. enemy players
- [ ] Test it in MP
IIRC the `AGM_Parameters` variables will always be defined in postInit. In preInit this would be the default value instead of the actually set module value at this point, so this line is pointless either way. I could be wrong though.