loongson/pypi: links for tf2onnx-xzj

loongson/mirror tf2onnx-xzj-1.6.0.tar.gz
loongson/mirror tf2onnx_xzj-1.6.0-py3-none-any.whl
loongson/mirror tf2onnx_xzj-1.6.0-py2-none-any.whl