loongson/pypi: links for stixdcpy

loongson/mirror stixdcpy-3.0.tar.gz
loongson/mirror stixdcpy-3.0-py3-none-any.whl
loongson/mirror stixdcpy-2.2.tar.gz
loongson/mirror stixdcpy-2.1.tar.gz
loongson/mirror stixdcpy-2.0.tar.gz