fix addtrack event, implement addTrack shim and use future plugin calls
fix addtrack event, implement addTrack shim and use future plugin calls

eface2face/cordova-plugin-iosrtc,eface2face/cordova-plugin-iosrtc,BasqueVoIPMafia/cordova-plugin-iosrtc,hit0907/cordova-plugin-iosrtc,hit0907/cordova-plugin-iosrtc,hit0907/cordova-plugin-iosrtc,eface2face/cordova-plugin-iosrtc,BasqueVoIPMafia/cordova-plugin-iosrtc,BasqueVoIPMafia/cordova-plugin-iosrtc