loongson/pypi: links for pgpc

loongson/mirror pgpc-0.0.4.tar.gz
loongson/mirror pgpc-0.0.4-py3-none-any.whl
loongson/mirror pgpc-0.0.3.tar.gz
loongson/mirror pgpc-0.0.3-py3-none-any.whl
loongson/mirror pgpc-0.0.2.tar.gz
loongson/mirror pgpc-0.0.2-py3-none-any.whl