loongson/pypi: links for broker-trade-client

loongson/mirror broker-trade-client-3.0.0b2.tar.gz
loongson/mirror broker_trade_client-3.0.0b2-py3-none-any.whl
loongson/mirror broker-trade-client-2.1.1.tar.gz
loongson/mirror broker_trade_client-2.1.1-py3-none-any.whl
loongson/mirror broker-trade-client-2.1.0.tar.gz
loongson/mirror broker_trade_client-2.1.0-py3-none-any.whl