Examples/ Completions on external storage

[lalva224]

It might not persist across sessions when deployed, which is why external storage makes more sense.

• Examples can be stored in any format
• Completions ideally in JSONL. The idea will be to read from DB then it must write to each respective JSONL completion file (openai fine tuning only works from jsonl files). This can be done at the start of the user's session.