message: Make use of Sprite action setting constructor in AirShaft
diff: class AirShaft: public Structure
  {
  public:
  - AirShaft() : Structure(constants::AIR_SHAFT, "structures/air_shaft.sprite", StructureClass::Tube)
  + AirShaft() : Structure(constants::AIR_SHAFT, "structures/air_shaft.sprite", constants::STRUCTURE_STATE_OPERATIONAL, StructureClass::Tube)
  {
  - sprite().play(constants::STRUCTURE_STATE_OPERATIONAL);
  maxAge(400);
  connectorDirection(ConnectorDir::CONNECTOR_VERTICAL);
  