loongson/pypi: links for chem-deg

loongson/mirror chem_deg-0.2.2.tar.gz
loongson/mirror chem_deg-0.2.2-py3-none-any.whl
loongson/mirror chem_deg-0.2.1.tar.gz
loongson/mirror chem_deg-0.2.1-py3-none-any.whl