Implement ConvexAgent

[TanGentleman]

This will be an implementation inspired from this helpful resource:
https://python.langchain.com/v0.2/docs/how_to/graph_semantic/

The differences:

• Convex instead of Neo4j (In the future I may use both)
• instead of graph.query, use a python wrapper for a convex.db.query
• get_information would work in much the same way, but the body would use this convex wrapper
• Rest would be adjusted based on how I want to integrate it into a reasonable Flashcard use case

[TanGentleman]

Before the agent gets implemented, I should make a simple API interface built off the Convex Client.

[TanGentleman]

I've made some .jsonl formatted flashcards, and things seem promising. Here's the quickstart: https://docs.convex.dev/quickstart/python