Ajout des méthodes SetHealth, SetHunger et GetHungerLimit dans le IPlayer
Création de l'num Direction
Move Direction enum to Model
Add GetDirection and SetDirection methods to IPlayer
Add CalculateNextTimeDirection to ParkViewModel to select the new direction of the player
First version of core logic

Conflicts:
	Tamazombie/Logic/src/com/tamazombie/abstractLogic/IParkViewModel.java
	Tamazombie/Logic/src/com/tamazombie/concreteLogic/ParkViewModel.java