pub fn send<'s>(
        &'s mut self,
        dst_addr: &[u8; 6],
        data: &[u8],
    ) -> Result<SendWaiter<'s>, EspNowError> {
        self.sender.send(dst_addr, data)
    }
Send data to peer.

The peer needs to be added to the peer list first.
esp-wifi/src/esp_now/mod.rs