Prevents loading maps and mods twice through various vault locations (F…

…AForever#3490)

* Prevents loading maps and mods twice through various vault locations

* Refactor init files

* Take the copy-paste approach

We're taking the copy-paste approach of init files as discussed
on Zulip. This entails updating the copy_pasta init file and then
copying / pasting it accordingly to init_faf and init_fafdevelop.

* Block sound folders with conflicting file names

* Update the init files, rename copy_pasta back to _shared

* Match init.lua with init_faf.lua

* Add support for ASI

* Fix develop using nx5 files, split off information

* Add better documentation

* Add init file of faf beta

* Update the readme for the init file

* Remove the nvidia fix exclusion as it is not part of this PR

* Removed the changelog, woops

* Fix typo with path for loading sounds