Using ESP-NOW V2

[alessandrv]

"Recently" Espressif introduced the second version of their esp now protocol that actually supports up to 1470 bytes instead of 250, thats a huge upgrade and will make esp now a lot better to transmit decent quality audio with really low delay.

I tried changing

 uint16_t buffer_size = ESP_NOW_MAX_DATA_LEN;

to ESP_NOW_MAX_DATA_LEN_V2, but it fails to send 100% of the time like this

DOCS

[alessandrv]

logging esp version with

 uint32_t version = 0;
      if (esp_now_get_version(&version) == ESP_OK) {
        LOGI("ESP-NOW version: %lu", version);
      } else {
        LOGE("Failed to get ESP-NOW version");
      }

ESP-NOW version: 2

Shows we are using version 2. So in theory it should work. But probably needs more work that I'm missing