This will add the new added source files (.cpp, .h, .qrc, .ui) to the
corresponding CMake source file as last arguments for known CMake
functions like add_executable, add_library as well for the Qt
counterprarts qt_add_executable or qt_add_library.
For custom functions the code will insert a target_sources() call.
Subsequent calls will add the files to the last target_sources.
The previous copy to clipboard mechanism and settings have been removed.
Fixes: QTCREATORBUG-26006
Fixes: QTCREATORBUG-27213
Fixes: QTCREATORBUG-28493
Fixes: QTCREATORBUG-29006
Change-Id: Ia6e075e4e5718e4106c1236673d469139611a677
Reviewed-by: hjk <hjk@qt.io>
