Draft: restructure the draft test script
Draft: restructure the draft test script

Add new function `_create_objects`.

Change annotations to use `App::Annotation` instead of `Draft Text`.

Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master