[ADD] added an extra layer to the grid for the lamps and fans. Grid now generates correctly.

Good enough

src/entities/house_generator.h

@@ -69,6 +69,7 @@ namespace entities
 	
 	private:
 		const FurniturePiece* GetRandomFurniturePiece();
+		const FurniturePiece* GetFurniturePiece(FurnitureType type);
 
 		/*
 		 * @brief: This function loads all the 3D furniture models