loongson/pypi: links for polkadot

loongson/mirror polkadot-2.0.0.tar.gz
loongson/mirror polkadot-2.0.0-py3-none-any.whl
loongson/mirror polkadot-1.0.1.tar.gz
loongson/mirror polkadot-1.0.0.tar.gz