Requests status on whether a scene is loaded or not.
    :param cli:
    :param scene_name:
    :return: bool

def query_scene_loaded(cli, scene_name):
    """
    Requests status on whether a scene is loaded or not.
    :param cli:
    :param scene_name:
    :return: bool
    """

    message_payload = {
        "scene_name": scene_name
    }
    msg = message.Message("query.unity.scene.loaded", message_payload)
    cli.send_message(msg)

    response = cli.read_message()
    verify_response(response)
    return bool(response['payload']['result'])