Add IHM to client size : 
- Main window to :
	- register
	- connect
	- find opponents
	- get Games
- Register window to :
	- set pseudo and password
	- send the message to server size
- Connection window to :
	- set pseudo and password
	- send the message to server side
We have to make a connection between client and server with :
- a message send
- a message receive