loongson/pypi: links for vpgen

loongson/mirror VPGen-1.0.0.tar.gz
loongson/mirror VPGen-1.0.0-py3-none-any.whl
loongson/mirror VPGen-0.9.5.tar.gz
loongson/mirror VPGen-0.9.5-py3-none-any.whl