add community sample with interactive graph visualization

[fskpf]

Description

Adds a new community sample notebook that enhances the local_search.ipynb by an interactive visualization for the knowledge graph of the parquet files and the context graph of the results.

Related Issues

#418

Checklist

• [x] I have tested these changes locally.
• [ ] I have reviewed the code changes.
• [ ] I have updated the documentation (if necessary).
• [ ] I have added appropriate unit tests (if applicable).

[fskpf]

@microsoft-github-policy-service agree company="yWorks"

[AlonsoGuevara]

Hi @fskpf I updated your notebook with some changes. This is now ready to merge.

Thanks for contributing!