mentortools/libs: links for custom-json-abm

mentortools/libs custom_json_abm-1.1.80821.tar.gz
mentortools/libs custom_json_abm-1.1.80821-py3-none-any.whl
mentortools/libs custom_json_abm-1.0.79315.tar.gz
mentortools/libs custom_json_abm-1.0.79315-py3-none-any.whl