I don't know if this could be useful today.
But since I'm going back to l2 and I'm a "beginner", I think this would be useful for beginners who want to add mods to their projects!
Basically, it's a git for sharing Java mods for certain projects.
Or adaptations of mods from one pack to another pack
https://github.com/Sage-BR/L2jMods/tree/main
If you don't need it, but want help, just pull your mods