loongson/pypi: links for back-cleaner

loongson/mirror back_cleaner-0.0.2.tar.gz
loongson/mirror back_cleaner-0.0.2-py3-none-any.whl
loongson/mirror back_cleaner-0.0.1.tar.gz
loongson/mirror back_cleaner-0.0.1-py3-none-any.whl