Add magic to fetch Graph Explorer URL when deployed in SageMaker

[triggan]

Community Note

• Please use a 👍 reaction to provide a +1/vote. This helps the community and maintainers prioritize this request.
• If you are interested in working on this issue or have submitted a pull request, please leave a comment.

Graph Notebook Version (and Graph Database and Version used if applicable)

Is your feature request related to a problem? Please describe.
When deployed in a Neptune Notebook instance, Graph Explorer is deployed alongside Graph Notebook/Jupyter as a container hosted on the same SageMaker Notebook instance. Graph Explorer is exposed using Jupyter Proxy and port 9250.

Format of a Graph Explorer URL:
https://<notebook-name>.notebook.<region>.sagemaker.aws/proxy/9250/explorer/

Describe the solution you'd like
Suggest that we include a magic in Graph Notebook that can detect if the user is running on a SageMaker Notebook / Neptune Notebook instance with Graph Explorer installed and provide the URL (clickable) to browse to Graph Explorer.

Additional context
N/A