find-games: pick up *.{nes,smc,bin} for the OpenEmu games

Signed-off-by: Christopher Larson <kergoth@gmail.com>
identify-game-wrapper: handle *.{nes,smc}

Signed-off-by: Christopher Larson <kergoth@gmail.com>
identify-game-wrapper: handle snes9x wrapper

Signed-off-by: Christopher Larson <kergoth@gmail.com>