add openvswitch support

sources/gui/src/mainwindow.h

@@ -34,6 +34,7 @@ class IpWidget;
 class MacvlanWidget;
 class MobileWidget;
 class NetctlAutoWindow;
+class OpenvswitchWidget;
 class PasswdWidget;
 class PppoeWidget;
 class SettingsWindow;
@@ -140,6 +141,7 @@ private:
     IpWidget *ipWid = nullptr;
     MacvlanWidget *macvlanWid = nullptr;
     MobileWidget *mobileWid = nullptr;
+    OpenvswitchWidget *openvWid = nullptr;
     PppoeWidget *pppoeWid = nullptr;
     TunnelWidget *tunnelWid = nullptr;
     TuntapWidget *tuntapWid = nullptr;