loongson/pypi: links for xgt-connector

loongson/mirror xgt_connector-2.6.6.tar.gz
loongson/mirror xgt_connector-2.6.6-py3-none-any.whl
loongson/mirror xgt_connector-2.6.5.post1.tar.gz
loongson/mirror xgt_connector-2.6.5.post1-py3-none-any.whl
loongson/mirror xgt_connector-2.6.5.tar.gz
loongson/mirror xgt_connector-2.6.5-py3-none-any.whl
loongson/mirror xgt_connector-2.6.4.tar.gz
loongson/mirror xgt_connector-2.6.4-py3-none-any.whl