loongson/pypi: links for keras

loongson/pypi Keras-2.4.3.tar.gz
loongson/pypi Keras-2.4.3-py3-none-any.whl
loongson/pypi Keras-2.3.1-py3-none-any.whl
loongson/pypi Keras-2.2.0-py3-none-any.whl