Correct install link in readme

Restructure for Python Playground: move package to src/, add specification.md and tests, update pyproject.toml

Correct type hints

Correct typo in help

Correct bug of ignoring multiple filters

Add content_summary to neighbors command

Add output of content_summary

Modify env var for notes dir folder path

Default min_score and top_k from env vars

Add inlclude-content option to neighbours retrieval

Allow multiple types filter for neighbours

Add option to filter by type for neighbours

Add neighbours retrieval

Make file hashing sensitive to embed model

Improve performance of resolving uuids to filenames