Encode OpenVPN password + OTP in tunnel rather than in the app.
Encoding them upfront in the app ends up persisting the profile with the
combined password. Update the library with a new OTP field in
OpenVPN.Credentials, so that the password encoding is performed [on the
fly in the
tunnel](https://github.com/passepartoutvpn/passepartoutkit-source/pull/398).
Similar to how provider modules are generated.
This is likely a regression caused by migrating to NEProfileRepository,
because starting a connection causes the profile to be saved to NE with
the encoded password. Later, the profile is restored from NE and
therefore contains the encoded password.
Split AppUI into AppUI and AppUIMain to allow for a new, simplified
AppUITV target tailored for the Apple TV.
As a PoC, present a view with a list of the shared profiles.
Davide