add move_by_n sequenced action
add move_by_n sequenced action

lsaffre/lino,lino-framework/lino,lsaffre/lino,lino-framework/lino,lsaffre/lino,lsaffre/lino,lino-framework/lino,lino-framework/lino,lino-framework/lino,lsaffre/lino