Properly add library loading

[Banane9]

So far, the MonkeyLoader/Libraries folder has been created, but nothing from there actually gets loaded.

.nupkg files (and DLLs?) from that folder should be loaded before any game packs or mods are loaded, or at the very last, when packages are loaded that depend on them.

[Banane9]

pushed a hacky version of this... it abuses the nuget package loading for mods to load them as mods and then shuts them down again :'D