loongson/pypi: links for ownd2

loongson/mirror ownd2-0.7.51.tar.gz
loongson/mirror OWNd2-0.7.51-py3-none-any.whl
loongson/mirror OWNd2-0.7.50.tar.gz
loongson/mirror OWNd2-0.7.50-py3-none-any.whl
loongson/mirror ownd2-0.7.49.tar.gz
loongson/mirror OWNd2-0.7.49-py3-none-any.whl