loongson/pypi: links for cfstacks

loongson/mirror cfstacks-0.4.7.tar.gz
loongson/mirror cfstacks-0.4.7-py3-none-any.whl
loongson/mirror cfstacks-0.4.6.tar.gz
loongson/mirror cfstacks-0.4.6-py3-none-any.whl
loongson/mirror cfstacks-0.4.5.tar.gz
loongson/mirror cfstacks-0.4.5-py3-none-any.whl