Application GUI

Ossature :
+ class Application : Main
+ class SimuUI : GUI de l'appli (boutons non fonctionnels)
+ class SimuListener ; Controller de la GUI
Application GUI

+ class Application : MAIN
+ class SimuUI : GUI de l'appli
+ class SimuListener : controller de la GUI
Revert "Application GUI"

This reverts commit 4228f59bd40c686fce552726b120eec4d2002a58.
Revert "Revert "Application GUI""

This reverts commit 09803b8b851bf7e9c2258c32051cfb06ecc3c819.