Add event to notify end of ICE candidates gathering to the application.
Add event to notify end of ICE candidates gathering to the application.

Distrotech/oRTP,dozeo/ortp,carpikes/ortp,dmonakhov/ortp,caizw/ortp,samueljero/linphone-oRTP,samueljero/linphone-oRTP,jiangjianping/ortp,wugh7125/ortp,Linphone-sync/oRTP,jiangjianping/ortp,dmonakhov/ortp,VTCSecureLLC/ortp,VTCSecureLLC/ortp,carpikes/ortp,videomedicine/oRTP,caizw/ortp,Linphone-sync/oRTP,wugh7125/ortp,caizw/ortp,jiangjianping/ortp,Distrotech/oRTP,dozeo/ortp,samueljero/linphone-oRTP,videomedicine/oRTP,carpikes/ortp,videomedicine/oRTP,VTCSecureLLC/ortp,Distrotech/oRTP,wugh7125/ortp,dozeo/ortp,dmonakhov/ortp,Linphone-sync/oRTP