Cathay towers fixed

Added the towers to the factions that were missing them so now, ogres, wood elfs and greenskins have their own towers, also made the towers diferent for each of the tiers for the chaos factions.
Also tried to add towers to khorne nurgle and tzeentch but rpfm says they are corupted and there aren't any maps to test them so maybe the player never sees them, shrug.