move FactoryState ownership out of BuildingSystem to Simulation

src/lib/sim/Simulation.cpp

@@ -94,6 +94,7 @@ void Simulation::reset(unsigned int seed)
     m_pendingSchematicChoices.clear();
 
     m_admin.clear();
+    m_factoryState = FactoryState{};
     m_beltSystem = BeltSystem(m_config.world.beltSpeed_tps);
     initializeSubsystems();
 
@@ -105,6 +106,7 @@ void Simulation::initializeSubsystems()
 {
     m_buildingSystem = std::make_unique<BuildingSystem>(
         m_config,
+        m_factoryState,
         m_beltSystem,
         [this]() { return allocateBuildingId(); },
         [this](int amount) { m_buildingBlocksStock += amount; },