Force WIICLASSIC ext, fix Classic controls

-Force WIICLASSIC ext (because this version fails to detect it or my non official remote fails to report it ?)
-Fix classic controls (ly, rx, button invert ..) : fixed in 3.11
-Remove HAT3 : because it's useless
-Fix D-Pad input, because it's not detected in RetroArch when mapped as KEY_UP/... => BTN_0123