Change thin3d to compile model 2_0 shaders by default. We can add a way to choose 3_0 later.
Change thin3d to compile model 2_0 shaders by default. We can add a way to choose 3_0 later.

libretro/ppsspp-native,hrydgard/native,libretro/ppsspp-native,unknownbrackets/native,zhykzhykzhyk/ppsspp-native,hrydgard/native,hrydgard/native,unknownbrackets/native,zhykzhykzhyk/ppsspp-native,libretro/ppsspp-native,zhykzhykzhyk/ppsspp-native,unknownbrackets/native,hrydgard/native,unknownbrackets/native,zhykzhykzhyk/ppsspp-native,libretro/ppsspp-native