conversations: support new APIs for user search

src/accountadapter.cpp

src/avadapter.cpp

src/calladapter.cpp

src/contactadapter.cpp

src/conversationsadapter.cpp

src/conversationsadapter.h

src/lrcinstance.h

src/mainview/components/ConversationSmartListView.qml

...view/components/ConversationSmartListViewItemDelegate.qml

src/mainview/components/MessageWebViewHeader.qml

src/mainview/components/RecordBox.qml

src/mainview/components/SidePanel.qml

src/messagesadapter.cpp

src/messagesadapter.h

src/qrimageprovider.h

src/smartlistmodel.cpp

src/smartlistmodel.h

src/utils.cpp