loongson/pypi: links for grpcio-tools

INFO: Because this project isn't in the mirror_whitelist, no releases from root/pypi are included.

loongson/pypi grpcio-tools-1.43.0.tar.gz
loongson/pypi grpcio_tools-1.43.0-cp39-cp39-linux_loongarch64.whl
loongson/pypi grpcio_tools-1.43.0-cp38-cp38-linux_loongarch64.whl
loongson/pypi grpcio_tools-1.43.0-cp37-cp37m-linux_loongarch64.whl
loongson/pypi grpcio_tools-1.43.0-cp36-cp36m-linux_loongarch64.whl
loongson/pypi grpcio-tools-1.37.1.tar.gz
loongson/pypi grpcio_tools-1.37.1-cp39-cp39-linux_loongarch64.whl
loongson/pypi grpcio_tools-1.37.1-cp38-cp38-linux_loongarch64.whl
loongson/pypi grpcio_tools-1.37.1-cp37-cp37m-linux_loongarch64.whl
loongson/pypi grpcio_tools-1.37.1-cp36-cp36m-linux_loongarch64.whl