add lock control via GPIO

Gpio.h

@@ -0,0 +1,22 @@
+#pragma once
+
+
+#include "NukiWrapper.h"
+
+class Gpio
+{
+public:
+    Gpio() = delete;
+    static void init(NukiWrapper* nuki);
+
+private:
+    static const uint _debounceTime;
+
+    static void IRAM_ATTR isrLock();
+    static void IRAM_ATTR isrUnlock();
+    static void IRAM_ATTR isrUnlatch();
+
+    static Gpio* _inst;
+    static NukiWrapper* _nuki;
+    static unsigned long _lockedTs;
+};