Yep, I have. :)
Here ya go: https://github.com/kaz321123/Mame-Support-Files
Download bios_images_hmod, and put in user_mods, and then install module.
The sample files are put in etc/libretro/system/mame2003 (and highscore.dat, and history.dat), and even a cheat.dat, but I don't know how to...