[Ajout] Pompier motorisé

src/main/java/model/Cloud.java

src/main/java/model/Fire.java

src/main/java/model/FireFighter.java

src/main/java/model/FireFighterScenario.java

src/main/java/model/MotorizedFireFighter.java

src/main/java/util/PositionUtil.java