docs: Adding fern python documentation

[ankush-cohere]

This PR introduces new Python scripts for various operations related to the Compass SDK. The scripts are added to the examples/fern_documentation/python/core directory and cover a range of functionalities, including creating and deleting indexes, searching documents, and managing document assets.

Changes:

• Addition of new Python scripts:
  • add_metadata.py: Adds metadata to documents using the CompassClient and DocumentAttributes classes.
  • create_index.py: Creates a new index using the CompassClient class.
  • delete_doc.py: Deletes a document using the CompassClient class.
  • delete_index.py: Deletes an index using the CompassClient class.
  • direct_search_index.py: Performs a direct search within an index, returning a list of RetrievedChunkExtended objects.
  • get_doc_asset.py: Retrieves a document asset using the CompassClient class.
  • get_document.py: Retrieves a document using the CompassClient class.
  • list_index.py: Lists all indexes and their details using the CompassClient class.
  • put_doc_into_index.py: Inserts documents into an index using the CompassClient and CompassParserClient classes.
  • refresh_index.py: Refreshes an index using the CompassClient class.
  • search_chunks.py: Searches for chunks within an index using the CompassClient class.
  • search_doc.py: Searches for documents within an index using the CompassClient class.
  • update_group_auth.py: Updates group authorization for documents using the CompassClient and GroupAuthorizationInput classes.
  • upload_files.py: Uploads files to an index using the CompassClient and DocumentAttributes classes.
• Import statements:
  • The import argparse statement in search_documents.py is now indented.

[luca-cohere]

Nice. For sake of uniformity with the other examples I would pass cli arguments instead of env variables but this way works too.

[ankush-cohere]

I would pass cli arguments instead of env variables but this way works too.

This will go to fern examples, and want it to make it as simple as possible... It looks something like this

[corafid]

Added several comments.

Also, the source code of the package is under compass_sdk_examples (which is the name of the package), so I would move the fern_documentation folder under it.

[benrules3]

Super valuable work here @ankush-cohere - thank you for putting in the work for all these examples!!

[benrules3]

A few suggestions - but wouldn't block! Would like to hear if there's a good reason on the os.getenv usage though.

[benrules3]

Nice changes, ty!