loongson/pypi: links for nbcs

loongson/mirror NBCS-1.4.tar.gz
loongson/mirror NBCS-1.4-py3-none-any.whl
loongson/mirror NBCS-1.3.tar.gz
loongson/mirror NBCS-1.3-py3-none-any.whl
loongson/mirror NBCS-1.2.tar.gz
loongson/mirror NBCS-1.2-py3-none-any.whl