InputManager now it is using InputKeys instead of directly accessing to the InputMouse / InputKeybord classes.
InputStateMachine now is in charge to handle all the selection logic (is the machine state now).
BillboardManager modified, need to complete the S4-SS[3] when we get the atlas of the overlays.
Also added functionality to the InputStateMachine, now we can select, move, etc a player changing the mouse cursor and showing the target position with an overlay.