[adapter] Update arc_agi adapter

[nelaturuharsha]

https://github.com/evaleval/every_eval_ever/tree/main/utils/arc_agi

[DeepLumiere]

SOURCE_URL = "https://arcprize.org/media/data/leaderboard/evaluations.json"
The JSON link isn't working out here
I feel this is the correct one: Github: arcprize/ARC-AGI-2

[DeepLumiere]

https://github.com/DeepLumiere/every_eval_ever/blob/main/utils/arc_agi/adapter.py

def write_log(log: dict, out_root: Path, developer: str, model: str) -> Path:
    filename = str(uuid.uuid4())
    out_dir = out_root / filename[:2] / filename[2:4]
    out_dir.mkdir(parents=True, exist_ok=True)
    out_path = out_dir / f"{filename}.json"
    out_path.write_text(
        json.dumps(log, indent=2) + "\n",
        encoding="utf-8"
    )
    return out_path

[DeepLumiere]

#184