loongson/pypi: links for catalystwan-v20-16

loongson/mirror catalystwan_v20_16-2.0.0a1.tar.gz
loongson/mirror catalystwan_v20_16-2.0.0a1-py3-none-any.whl
loongson/mirror catalystwan_v20_16-2.0.0a0.tar.gz
loongson/mirror catalystwan_v20_16-2.0.0a0-py3-none-any.whl