Adds rfid example code.

device/main/main.cpp

@@ -4,6 +4,7 @@
 
 #include "Networking.hpp"
 #include "WebInterface.hpp"
+#include "RFIDInterface.hpp"
 
 extern "C" {
     void app_main();
@@ -11,6 +12,7 @@ extern "C" {
 
 Networking networking;
 WebInterface webInterface;
+RFIDInterface rfid;
 
 void app_main(void) {
     initArduino();
@@ -18,6 +20,6 @@ void app_main(void) {
     Serial.begin(115200);
 
     networking.connectWifi();
-
     webInterface.start();
+    rfid.start();
 }