loongson/mirror: links for mimesniff

loongson/mirror mimesniff-1.1.1.tar.gz
loongson/mirror mimesniff-1.1.1-py3-none-any.whl
loongson/mirror mimesniff-1.1.0-py3-none-any.whl
loongson/mirror mimesniff-1.0.1-py3-none-any.whl