New feature for transport

[tafilete]

Hi, sometimes when the AI is managing troops/ships, they get stuck because they run out of supply.
It would be nice to have an option in the cargo/supply truck to select (where you put; go to, scrap, go to base, entrench, clear, etc) a new option that could be "supply troops".
The idea is that once selected, the cargo unit would automatically go to search for stucked units.
It takes a lot of time doing this manually and the AI loves to send the troops to far away lands with no supply.