Various USB fixes (#5422)

* Fix compile archive arguments for the new toolchain

* Add menu to S2 for picking through which port to upload

Internal USB CDC requires to reset and wait for the new port (because persistence is not yet stable)

* USB CDC should also be started in main

* Fix URL and USB version for WebUSB

* Update vendor callback API

* Update CDC::write to use TX_DONE semaphore

* Update USB_Serial example

cores/esp32/main.cpp

@@ -49,6 +49,7 @@ extern "C" void app_main()
 {
 #if ARDUINO_SERIAL_PORT //Serial used for USB CDC
     USB.begin();
+    Serial.begin();
 #endif
     loopTaskWDTEnabled = false;
     initArduino();