callview: add plugin

jami-qt.pro

qml.qrc

src/clientwrapper.h

src/mainapplication.cpp

src/mainview/components/CallOverlay.qml

src/mainview/components/CallViewContextMenu.qml

src/mainview/components/MediaHandlerItemDelegate.qml

src/mainview/components/MediaHandlerPicker.qml

src/mainview/js/mediahandlerpickercreation.js

src/mediahandleradapter.cpp

src/mediahandleradapter.h

src/mediahandleritemlistmodel.cpp

src/mediahandleritemlistmodel.h

src/preferenceitemlistmodel.cpp

src/preferenceitemlistmodel.h

src/settingsview/components/PluginListPreferencesView.qml

src/settingsview/components/PluginSettingsPage.qml

src/utils.cpp

src/utils.h