Fix villager and caravan collision issue

Currently villagers can get stuck dropping off resources due to weird collision such as nearby villagers, trees.

This issue should not be present and villagers should. be smart enough to automatically move in/out to return resources.

With caravans route if their is a wall sometimes they get stuck while other times they take a long route. This behavior needs to be consistent if it's a wall connector the caravans should be stuck until wall is removed or gate is made. If it's enemy wall then one must destroy it.

Likewise caravans shouldn't get stuck due to path blocking between building the units should be smart enough to find a way through as pose to creating a blockade.

This is especially true in TG where caravans go through an ally base and there is a blockade due to few building being too close.