Merge pull request #7 from Orbifold/cli

- **feature**: CLI command to view log entries
- **refactor**: NetworkXGraphStorage has been refectored to improve code clarity and maintainability.
- **feature**: Added export_graph method to Knwl class to export the knowledge graph in various formats (json, csv, ttl, cypher).

Merge pull request #6 from Orbifold/s3

S3 storage backend implemented for Knwl

chore: changelog update for v1.8.0 release.

Various small things revealed via Knwl MCP and Knwl Neo.

Changelog added

Readme and quickstart reworked.

Cleanup

As good as done.