Unit transporter attack

[koniecpolski]

Add an attack order for unit transporter script I wish I could switch my unit transporter behavior mode to automatically picking enemy troops up and dropping them in the same location

[Skeltek]

If that was to be introduced, I would make them automatically switch to automatically picking up and dropping enemy units, if the player drops any enemy unit. It should be turned off again when pressing 'stop'. That way it would not consume a part of the function namespace.