added support for hugging face datasets

[Tyrest]

trafficstars

We can now load datasets from Huggingface as show below

dataset = load_dataset("lex_glue", "ledgar")

test_dataset = dataset["test"]
test_dataset = map_label_to_string(test_dataset, "label")

test_dataset = test_dataset.rename_column("text", "example")

ledgar_path = Path("../autolabel/examples/ledgar")
with open(ledgar_path / "config_ledgar.json", "r") as f:
    config = json.load(f)
if "few_shot_examples" in config["prompt"] and isinstance(config["prompt"]["few_shot_examples"], str):
    config["prompt"]["few_shot_examples"] = str(ledgar_path / config["prompt"]["few_shot_examples"])
agent = LabelingAgent(config)

agent.plan(test_dataset, max_items=8)
agent.run(test_dataset, max_items=8)