ESP32-S3: different GPIO mapping

- change pins 1/3 to RX and TX as defined by the framework
- adjusted 'isPinOk" method

wled00/json.cpp

@@ -696,7 +696,11 @@ void serializeInfo(JsonObject root)
     wifi_info[F("txPower")] = (int) WiFi.getTxPower();
     wifi_info[F("sleep")] = (bool) WiFi.getSleep();
   #endif
-  root[F("arch")] = "esp32";
+  #if !defined(CONFIG_IDF_TARGET_ESP32C2) && !defined(CONFIG_IDF_TARGET_ESP32C3) && !defined(CONFIG_IDF_TARGET_ESP32S2) && !defined(CONFIG_IDF_TARGET_ESP32S3)
+    root[F("arch")] = "esp32";
+  #else
+    root[F("arch")] = ESP.getChipModel();
+  #endif
   root[F("core")] = ESP.getSdkVersion();
   //root[F("maxalloc")] = ESP.getMaxAllocHeap();
   #ifdef WLED_DEBUG