Added ECHO cmd and fixed some timing issues

main/cmd/cmd_handler.c

@@ -57,6 +57,8 @@ static const char *message_type_name(uint16_t id) {
     return "TAP_NOTIFY";
   case alox_MessageType_CACHE_STATUS:
     return "CACHE_STATUS";
+  case alox_MessageType_ESPNOW_ECHO_PING:
+    return "ESPNOW_ECHO_PING";
   default:
     return "UNKNOWN";
   }