Split code between ulanzi environment and awtrix_upgrade

Added BME280 sensor support for awtrix_upgrade.

Removed battery readings for awtrix_upgrade

Added DFMiniMp3 lib for replacing the Ulanzi buzzer in the future

src/DisplayManager.h

@@ -11,8 +11,10 @@ private:
 
     DisplayManager_() = default;
 
+#ifdef ULANZI
     const int BatReadings = 10;
     uint16_t TotalBatReadings[10];
+#endif
     int readIndex = 0;
     uint16_t total = 0;
     uint16_t average = 0;