loongson/pypi: links for bprc

loongson/mirror bprc-0.7.0.tar.gz
loongson/mirror bprc-0.7.0.linux-x86_64.tar.gz
loongson/mirror bprc-0.7.0-py3-none-any.whl
loongson/mirror bprc-0.6.9.linux-x86_64.tar.gz
loongson/mirror bprc-0.6.8.linux-x86_64.tar.gz