loongson/mirror: links for pig-agent-core

loongson/mirror pig_agent_core-0.0.4.tar.gz
loongson/mirror pig_agent_core-0.0.4-py3-none-any.whl
loongson/mirror pig_agent_core-0.0.3.tar.gz
loongson/mirror pig_agent_core-0.0.3-py3-none-any.whl