move FactoryState ownership out of BuildingSystem to Simulation

src/balancing/ArenaSimulation.h

@@ -10,6 +10,7 @@
 
 #include "BalancingConfig.h"
 #include "BeltSystem.h"
+#include "FactoryState.h"
 #include "EntityAdmin.h"
 #include "BuildingId.h"
 
@@ -107,6 +108,7 @@ private:
     BuildingId m_nextBuildingId;
 
     EntityAdmin m_admin;
+    FactoryState                      m_factoryState;
     BeltSystem m_beltSystem;
     std::unique_ptr<BuildingSystem> m_buildingSystem;
     std::unique_ptr<ShipSystem>     m_shipSystem;