v0.12.1: Laggy game fix

Credits: ahezard, Gericom, Apache Thunder, Robz8, _catcatcat, shutterbug2000, and damianoamatruda.

Instructions:

1. Download the .7z file, then extract the .nds file, to sd:/_nds.
2. Extract the .ver file to sd:/_nds/dsimenuplusplus.

Bug fixes

• Fixed lags of some known games, such as Metroid Prime Pinball, GTA Chinatown Wars (still lags some), Sonic Classic Collection, and Pokemon HGSS/BW/B2W2.
• Some games that we're somehow broken in v0.12.0 are now working again.