Add menu option for autostart of game

[MixelF]

Hi,

To be able to make my just made cabinet match the real classic one as much as possible, I've entered an option in /etc/rc.local to have EmulationStation start a rom directly at boot.

Wouldn't it be nicer to implement such a function in a menu? So that you can directly open a rom after start of EmulationStation and upon exit of the ROM enter E.S. again?