Add IllegalMovementException and VictoryException.

Class use for handling Exception (illegal move and victory :
X get out by the exit) when check if a movement is a valide.
Add NB_SQUARE = 6 to Constants.
Rename getLongueur() to getSize in Vehicule.
ParkingController is now fully working.

CheckMovement() handles victory and illegal movement
by throwing exceptions.
Merge branches.

Merge xavier's branch (Player) with Hichem and Jo's branch
(ParkingControler) and my branch (ParkingFactory).
Add a println() to LineFileWriter.
Ask Player the level he wants to play.