loongson/pypi: links for mmgen-node-tools

loongson/mirror mmgen_node_tools-3.5.dev8.tar.gz
loongson/mirror mmgen-node-tools-3.4.0.tar.gz
loongson/mirror mmgen-node-tools-3.3.1.tar.gz
loongson/mirror mmgen-node-tools-3.3.0.tar.gz
loongson/mirror mmgen-node-tools-3.2.0.tar.gz
loongson/mirror mmgen-node-tools-3.1.1.tar.gz