MotorFirefighter fini

src/main/java/app/SimulatorApplication.java

src/main/java/controller/Controller.java

src/main/java/model/Board.java

src/main/java/model/FirefighterBoard.java

src/main/java/model/MotorFirefighter.java

src/main/java/view/FirefighterGrid.java

src/main/java/view/Grid.java

src/test/java/model/FirefighterBoardTest.java