Function push_task 

pub async fn push_task<Args, B, Compact>(
    task: Args,
    storage: Arc<RwLock<B>>,
) -> Result<(), ApiError>
where
    Args: Serialize + DeserializeOwned + 'static,
    B: TaskSink<Args> + Send + BackendExt,
    B::Error: Error,
    B::Codec: Codec<Args, Compact = Compact>,
    <<B as BackendExt>::Codec as Codec<Args>>::Error: Error,

Push a new task to the specified queue.