Updated QML and C++ in various places to build and work with new Qt (6.4+)
Minor bugfixes, possibly caused by the Qt version bump, and mostly in JS logic.
Tried (again) to get mod sorting working by dragging them within the list.
Initial support for Profiles. (To switch between FO4 and FOLON, for example.)
Initial "Launch Game" stuff, but it's far from done. Don't use it (yet).
