[DOCS] Gremlin Part II demo notebook #244

Is your feature request related to a problem? Please describe.

More examples (and support)

Describe the solution you'd like

• Neptune Sagemaker instance <> graphistry server
• Passing gremlinpython objects to pygraphistry, including via magics
• Top queries: sampling, search & expand, connect-the-dots, ...
• Add transforms & enrichments
• Writebacks

Describe alternatives you've considered

• APIs should support, but a notebook should make top cases clear
• Do as a Part II to current, vs making current overwhelming

Additional context
Similar use cases in graph-app-kit