loongson/pypi: links for sumac

loongson/mirror sumac-2.23.tar.gz
loongson/mirror sumac-2.22.tar.gz
loongson/mirror sumac-2.21.tar.gz
loongson/mirror sumac-2.2.tar.gz
loongson/mirror sumac-2.1.tar.gz
loongson/mirror sumac-1.2.tar.gz
loongson/mirror sumac-1.1.tar.gz
loongson/mirror sumac-1.0.tar.gz