Add ESP32 USB built-in library, remove Adafruit_TinyUSB.h include from main.cpp

src/main.cpp

@@ -5,7 +5,6 @@
 #include <driver/gpio.h>
 #include <esp_rom_sys.h>
 #include "midi_transport.h"
-#include "Adafruit_TinyUSB.h"
 #include "pixel_stomp_mux.h"
 #include "led_stub.h"
 #include "switch_stub.h"