updateManager: create a plugin store and a plugin manager

CMakeLists.txt

src/app/appsettingsmanager.h

src/app/appversionmanager.cpp

src/app/constant/JamiStrings.qml

src/app/lrcinstance.cpp

src/app/lrcinstance.h

src/app/networkmanager.cpp

src/app/networkmanager.h

src/app/pluginadapter.cpp

src/app/pluginadapter.h

src/app/pluginlistmodel.cpp

src/app/pluginlistmodel.h

src/app/pluginstorelistmodel.cpp

src/app/pluginstorelistmodel.h

src/app/pluginversionmanager.cpp

src/app/pluginversionmanager.h

src/app/qmlregister.cpp

src/app/settingsview/components/PluginAvailableDelagate.qml

src/app/settingsview/components/PluginItemDelegate.qml

src/app/settingsview/components/PluginListView.qml