Update library to allow optional VPN configurations. This in turn allows
a module to be used with a provider, where the configuration is
generated on the fly.
- [x] NE managers were not deleted when unable to be decoded to a
profile
- [x] Keychain items were not deleted on profile removal
- [x] Perform clean-up on app launch
- [x] Perform clean-up on app active
Prematurely merged as #727 then reverted, this is the complete PR.
Initial integration of providers via API:
- Generic views and modifiers for provider/server selection
- Add in OpenVPNView
- Prepare in WireGuardView
Also:
- Introduce ProfileProcessor, move IAP processing there
- Move .asModuleView() to ModuleViewModifier for proper animation
- Use .themeModal() rather than .sheet()
Davide