atgc-bundle-drone-station: drone factory station

[jbilcke]

the drone station allows a player to buy and launch automated air drones (that is, flying robots)

drones, like ground robots, can be taken over by a human player for direct control, at anytime (of course, if owned by the player, or hijacked)

there are two kinds of drones:

• quadcopter (for short distance, vertical flight, can stay idle)
• jet (for long distance, cannot hover and stay idle)

which can be used for different kind of missions:

• scout: intel gathering missions (to clear the fog of war. only give static one-time ID of target, for each reconnaissance mission)
• explorer: deposit and natural ressource mapping
• soldier: defense