loongson/pypi: links for qnit

loongson/mirror qnit-0.5.1.tar.gz
loongson/mirror qnit-0.5.1-py3-none-any.whl
loongson/mirror qnit-0.5.0.tar.gz
loongson/mirror qnit-0.5.0-py3-none-any.whl
loongson/mirror qnit-0.4.0.tar.gz
loongson/mirror qnit-0.4.0-py3-none-any.whl