Add HardwareRfid class implementation and integrate with main loop

lib/hardware/hardware_led.hpp

@@ -1,5 +1,4 @@
-#ifndef HARDWARE_LED_HPP
-#define HARDWARE_LED_HPP
+#pragma once
 
 #include "hardware.pb.h"
 #include <Adafruit_NeoPixel.h>
@@ -33,5 +32,3 @@ private:
     unsigned long _fadeStartTime;
     bool _isActive;
 };
-
-#endif