Add code to log completions as OpenPipe request logs

[arcticfly]

This PR adds an example of logging completions to OpenPipe.

Code:

    requested_at = int(time.time() * 1000)
    chat_completion = await client.chat.completions.create(
        messages=messages, model=model.name
    )

    puzzle_key = generate_puzzle_key(puzzle)
    print(f"puzzle_key: {puzzle_key}")
    op_client.report(
        requested_at=requested_at,
        received_at=int(time.time() * 1000),
        req_payload={
            "model": model.name,
            "messages": messages,
            "metadata": {
                "notebook-id": "temporal-clue",
                "iteration": str(iteration),
                "validation": str(is_validation),
                "puzzle_key": puzzle_key,
            },
        },
        resp_payload=chat_completion,
        status_code=200,
    )

Logs in OpenPipe:

[arcticfly]

@bradhilton Not sure if it matters whether we use 0.5.0 or 0.6.0 which was released today, but thought it was best to specify to be safe.

[arcticfly]

@bradhilton Which version of uv are you using? I'm on 0.6.10, but I can standardize to yours to avoid rewriting the lockfile on each installation!

[bradhilton]

I just upgraded my uv install, we should be good

[arcticfly]

Logic for reporting completions to OpenPipe