NetworkExtension iOS 15.5 to 16.0 API Differences

Added NEDNSOverTLSSettings.identityReference

Added NEDNSOverHTTPSSettings.identityReference

Added NEVPNConnectionError

Added NEVPNConnectionErrorOverslept

Added NEVPNConnectionErrorNoNetworkAvailable

Added NEVPNConnectionErrorUnrecoverableNetworkChange

Added NEVPNConnectionErrorConfigurationFailed

Added NEVPNConnectionErrorServerAddressResolutionFailed

Added NEVPNConnectionErrorServerNotResponding

Added NEVPNConnectionErrorServerDead

Added NEVPNConnectionErrorAuthenticationFailed

Added NEVPNConnectionErrorClientCertificateInvalid

Added NEVPNConnectionErrorClientCertificateNotYetValid

Added NEVPNConnectionErrorClientCertificateExpired

Added NEVPNConnectionErrorPluginFailed

Added NEVPNConnectionErrorConfigurationNotFound

Added NEVPNConnectionErrorPluginDisabled

Added NEVPNConnectionErrorNegotiationFailed

Added NEVPNConnectionErrorServerDisconnected

Added NEVPNConnectionErrorServerCertificateInvalid

Added NEVPNConnectionErrorServerCertificateNotYetValid

Added NEVPNConnectionErrorServerCertificateExpired

Added NEVPNConnectionErrorDomain

Added -[NEVPNConnection fetchLastDisconnectErrorWithCompletionHandler:]