Added new getTemperature method in order to read the internal temp of the DS3231 RTC chip

src/app/RtcManager.cpp

@@ -31,3 +31,7 @@ boolean RtcManager::hasLostPower() const
   return _rtcRef.lostPower();
 }
 
+float RtcManager::getTemperature() const
+{
+  return _rtcRef.getTemperature();
+}

src/app/RtcManager.h

@@ -11,6 +11,7 @@ class RtcManager
     void setTime(const DateTime dateTime);
     void setDateTime(const DateTime dateTime);
     boolean hasLostPower() const;
+    float getTemperature() const;
   protected:
     RtcManager(RTC_DS3231 &rtc);
   private: