loongson/mirror: links for exurl

loongson/mirror exurl-1.2.1.tar.gz
loongson/mirror exurl-1.2.tar.gz
loongson/mirror exurl-1.2-py3-none-any.whl
loongson/mirror exurl-1.0.tar.gz
loongson/mirror exurl-1.0-py3-none-any.whl