loongson/pypi: links for proto-google-cloud-datastore-v1

loongson/mirror proto-google-cloud-datastore-v1-0.90.4.tar.gz
loongson/mirror proto-google-cloud-datastore-v1-0.90.3.tar.gz
loongson/mirror proto-google-cloud-datastore-v1-0.90.1.tar.gz
loongson/mirror proto-google-cloud-datastore-v1-0.90.0.tar.gz