Function launch_serial 

pub async fn launch_serial(
    allow_serial_log_tags: impl IntoIterator<Item = impl AsRef<str>>,
    deny_serial_log_tags: impl IntoIterator<Item = impl ToString>,
    logs_repo: Arc<LogsRepository>,
    sink: impl Write + Send + 'static,
    freeze_receiver: UnboundedReceiver<Sender<EventPair>>,
    flush_receiver: UnboundedReceiver<Sender<()>>,
)

Function that forwards logs from Archivist to the serial port. Logs will be filtered by allow_serial_log_tags to include logs in the serial output, and deny_serial_log_tags to exclude specific tags.