Add binary protocol v2 & v3 to websocket

main/protocols/mqtt_protocol.cc

@@ -207,6 +207,11 @@ bool MqttProtocol::OpenAudioChannel() {
     }
     udp_ = Board::GetInstance().CreateUdp();
     udp_->OnMessage([this](const std::string& data) {
+        /*
+         * UDP Encrypted OPUS Packet Format:
+         * |type 1u|flags 1u|payload_len 2u|ssrc 4u|timestamp 4u|sequence 4u|
+         * |payload payload_len|
+         */
         if (data.size() < sizeof(aes_nonce_)) {
             ESP_LOGE(TAG, "Invalid audio packet size: %zu", data.size());
             return;