Streamline initialization of AppContext objects without singletons,
especially because some are interconnected.
Rethink ProfileProcessor to be the only gateway of profile processing
for:
- Include
- Save
- Connect
Provide closures with access to the IAPManager for eligibility checks.
Finally, take a ProfileProcessor parameter in:
- ProfileManager (for isIncluded and willSave)
- ExtendedTunnel (for willConnect)
so that it's used implicitly without having to put it into the SwiftUI
environment.
Other than that:
- Move AppError to CommonLibrary
- Skip decoding of attributes from Core Data because they are already
part of the profile
