Update IRRemote ESP8266 to 2.6.2 and add ESP32 support

lib/IRremoteESP8266/examples/ControlSamsungAC/ControlSamsungAC.ino

@@ -23,9 +23,7 @@
 *   * ESP-01 modules are tricky. We suggest you use a module with more GPIOs
 *     for your first time. e.g. ESP-12 etc.
 */
-#ifndef UNIT_TEST
 #include <Arduino.h>
-#endif
 #include <IRremoteESP8266.h>
 #include <IRsend.h>
 #include <ir_Samsung.h>