Automatically detect installed game version

[Phoenix616]

Currently one has to manually select which game version one has installed when installing the mod loader, it would improve usability a lot if this could be done automatically in some way.

[gabriel-nsiqueira]

they could check for the steam dlls

[Phoenix616]

Not sure about how to get it from Steam but it can be detected by reading the Among Us_Data/globalgamemanagers file e.g. like this.