loongson/mirror: links for mumulib

loongson/mirror mumulib-1.0.16.tar.gz
loongson/mirror mumulib-1.0.16-py3-none-any.whl
loongson/mirror mumulib-1.0.12.tar.gz
loongson/mirror mumulib-1.0.12-py3-none-any.whl