loongson/pypi: links for jupyterlab-plugin-graph

loongson/mirror jupyterlab-plugin-graph-0.2.1.tar.gz
loongson/mirror jupyterlab_plugin_graph-0.2.1-py3-none-any.whl
loongson/mirror jupyterlab-plugin-graph-0.2.0.tar.gz
loongson/mirror jupyterlab_plugin_graph-0.2.0-py3-none-any.whl