I've seen mods that add lightsabers and other various items on Peragus but none that add Jedi robes, especially the Dark Jedi Master robe which afaik can only be obtained from Sion at the end of the game, which is pretty lame.
It would be nice to have a mod which adds some of the Jedi robes to the medical container when you start on Peragus so you can actually use them throughout the course of the entire game.