Added DUC attacking system for early game on land maps. Barbarian can handle up to 3 different unit groups, each of which is handled separately. They may have different targets and in case of ranged groups, they are capable of grouped unit micro. Groups try to find a safe route to their target, attempting to avoid towers and TCs. The system can still certainly be improved a lot.

General:
-Barbarian tries to place farms nicely around the TC.
-Fixed several issues in boar hunting
-Reduced retasking of villagers at castle/imperial.
-Made changes to unit selection in both 1v1 and TGs.

DUC:
-Improved drush micro (still needs more work).
-Trapped villagers are detected on nomad start.
-Scouts in Barbarian team can coordinate to hit enemy villagers in some cases.

DM:
-Not all villagers garrison against enemy scout at start
-Buildings are placed closer to villagers

WK support added.