Add on screen slot2 analog stick

[Aijokey]

Add on screen slot2 analog stick

[SapphireRhodonite]

Good idea!, I will add it!

[SapphireRhodonite]

0.8.0.rc3 adds an on-screen analog stick for games or mods supporting the Slot-2 analog input accessory. This does not add analog controls to every DS game.