Sending publish commands inside ps_set_new_msg_cb

[Daniel-Craciun]

Hi Jaracil, I've been wondering how would I send a PS_PUB_INT inside of a callback defined in the ps_set_new_msg_cb because looking at the code currently the GLOBAL_LOCK will lock the execution for the next PS_PUB_INT. I'm using freertos and psqueue_b. My code example.

`
void cb_log_value(ps_subscriber_t *s) {
ps_msg_t *msg = ps_get(s, MS_MESSAGE_TIMEOUT);

  if (msg != NULL) {
      if (PS_IS_INT(msg)) {
          ESP_LOGI("value", msg->int_val);
      }

      ps_unref_msg(msg);
  }

}

ps_subscriber_t *s2 = ps_new_subscriber(MESSAGE_QUEUE_SIZE, PS_STRLIST("counter2"));
ps_set_new_msg_cb(s2, cb_log_value);

void cb_send_new_value(ps_subscriber_t *s) {
ps_msg_t *msg = ps_get(s, MS_MESSAGE_TIMEOUT);

  if (msg != NULL) {
      if (PS_IS_INT(msg)) {
          PS_PUB_INT("counter2", msg->int_val+1);
      }

      ps_unref_msg(msg);
  }

}

ps_subscriber_t *s = ps_new_subscriber(MESSAGE_QUEUE_SIZE, PS_STRLIST("counter1"));
ps_set_new_msg_cb(s, cb_send_new_value);
`