loongson/pypi: links for command-add

loongson/mirror command_add-0.2.0.tar.gz
loongson/mirror command_add-0.2.0-py3-none-any.whl
loongson/mirror command_add-0.1.0.tar.gz
loongson/mirror command_add-0.1.0-py3-none-any.whl