loongson/pypi: links for backstage-simple-client

loongson/mirror backstage_simple_client-0.1.4.tar.gz
loongson/mirror backstage_simple_client-0.1.4-py3-none-any.whl
loongson/mirror backstage_simple_client-0.1.3.tar.gz
loongson/mirror backstage_simple_client-0.1.3-py3-none-any.whl
loongson/mirror backstage_simple_client-0.1.2.tar.gz
loongson/mirror backstage_simple_client-0.1.2-py3-none-any.whl