misc: update copyright date

cmake/cmake_uninstall.cmake.in

src/account.cpp

src/account.h

src/accountmodel.cpp

src/accountmodel.h

src/actionextenderdefault.cpp

src/actionextenderdefault.h

src/api/account.h

src/api/avmodel.h

src/api/behaviorcontroller.h

src/api/call.h

src/api/contact.h

src/api/contactmodel.h

src/api/conversation.h

src/api/conversationmodel.h

src/api/datatransfer.h

src/api/datatransfermodel.h

src/api/interaction.h

src/api/lrc.h

src/api/newaccountmodel.h