Pierre/json images

[hexapode]

Add support for JSON and images

Usage:

    os.environ["LLAMA_CLOUD_API_KEY"] = "llx-..."
    parser = LlamaParse()
    filepath = os.path.join(os.path.dirname(__file__), "pdf_path.pdf")
    result = parser.get_json_result(filepath)
    print(result)
    images = parser.get_images(result, "/Users/pierre/Code/llama_parse/tmp")
    print(images)