loongson/pypi: links for dim-tools

loongson/mirror dim-tools-3.0.1b0.tar.gz
loongson/mirror dim_tools-3.0.1b0-py3-none-any.whl
loongson/mirror dim-tools-2.0b2.tar.gz
loongson/mirror dim_tools-2.0b2-py2-none-any.whl