Added Q_ENUM support

src/modules/dns-client/includes/dns-client/QDnsClient.h

                 Connected = 2,
                 Disconnecting = 3
             };
+            Q_ENUM(ClientState)
 
             enum ErrorCode
             {
                 SocketError = 5,
                 NotConnected = 6
             };
+            Q_ENUM(ErrorCode)
 
             struct OnStateChangedParams
             {