Add user:// as mod source for 4.x

[DarthMDev]

Fixes #548 (but for 4.x)

[KANAjetzt]

Just a quick first look. I recommend adding an override option similar to override_path_to_mods.

godot-mod-loader/addons/mod_loader/resources/options_profile.gd

Line 85 in a165641

@export_dir var override_path_to_mods = ""

Thanks for your work and let me know if you get stuck on something :)

[Qubus0]

nice, thank you for your contribution 😄 a few naming and docs things, but looks good otherwise. will need to test at a later date