MDL-39617 Add cli backup script for a single course backing up.
MDL-39617 Add cli backup script for a single course backing up.

Useful for backing up a single course. Accepts parameters:

--courseid=INTEGER        Course ID for backup
--courseshortname=STRING  Course shortname for backup.
--destination=STRING      Path where to store backup file. If not set, the backup
                          will stored within the same course backup area.

dilawar/moodle