state-handler: create eKey fucntionality

This commit introduces buttonHandling of esp-vent
within the StateHandler class and main().

StateHandler/inc/Event.h

@@ -23,10 +23,10 @@ class Event {
     /** Time event */
     eTick
   };
-  Event(eventType e = eTick, int b = 0, int t = 0)
+  Event(eventType e = eTick, uint8_t b = 0, int t = 0)
       : type(e), button(b), temp(t){};
   eventType type;
-  int button;
+  uint8_t button;
   int temp;
 };
 

StateHandler/inc/StateHandler.h

@@ -96,7 +96,7 @@ private:
    * @param newstate new state to be set to current
    */
   void SetState (state_pointer newstate);
-  uint8_t current_mode;
+  bool current_mode;
   Counter value[2] = { { 0, 100 }, { 0, 120 } };
   LiquidCrystal *_lcd;