Replace arduino-timer with PositionWatcher

lib/shade/Shade.h

@@ -8,11 +8,13 @@ struct Shade {
   uint16_t ID;
   std::string key;
   std::string friendlyName;
-  int8_t lastTargetPosition;
+
+  std::string state;
+  
   int8_t lastPosition;
-  uint8_t samePositionCount;
-  uint8_t positionFetchCount;
-  void* timer;
+  int8_t lastBattery;
+
+  bool modified;
 };
 
 #endif // SHADE_H