Function std_thread_receiver_option 

pub fn std_thread_receiver_option<T: Send + 'static, E: Send + 'static>(
    rx: impl BlockingReceiver<Item = T, Error = E> + Send + 'static,
    write: WriteSignal<Option<T>>,
    write_error: WriteSignal<Option<E>>,
    trigger: ExtSendTrigger,
)

Execute a blocking channel receiver on a dedicated std::thread, for Option signals.