loongson/pypi: links for pubsub-utils

loongson/mirror pubsub_utils-1.0.0.tar.gz
loongson/mirror pubsub_utils-1.0.0-py3-none-any.whl
loongson/mirror pubsub_utils-1.0.0b0.tar.gz
loongson/mirror pubsub_utils-1.0.0b0-py3-none-any.whl