loongson/pypi: links for rgkit-py3

loongson/mirror rgkit_py3-1.2.0.tar.gz
loongson/mirror rgkit_py3-1.2.0-py3-none-any.whl
loongson/mirror rgkit_py3-1.1.1.tar.gz
loongson/mirror rgkit_py3-1.1.0.tar.gz
loongson/mirror rgkit_py3-1.0.0.tar.gz