loongson/pypi: links for buttonshim

loongson/mirror buttonshim-0.0.2.tar.gz
loongson/mirror buttonshim-0.0.2-py3-none-any.whl
loongson/mirror buttonshim-0.0.2-py2-none-any.whl
loongson/mirror buttonshim-0.0.1.tar.gz