loongson/mirror: links for installtool

loongson/mirror installtool-1.0.tar.gz
loongson/mirror installtool-1.0-py3-none-any.whl
loongson/mirror installtool-0.99.7.tar.gz
loongson/mirror installtool-0.99.7-py3-none-any.whl
loongson/mirror installtool-0.98.0.0-py3-none-any.whl
loongson/mirror installtool-0.97.0.0-py3-none-any.whl