Variable previous cycle number added in the battery header file

src/battery_data/battery.h

@@ -77,6 +77,7 @@ typedef struct{
     uint16_t capacitance;
     uint8_t charge_fraction;
     uint8_t cycle_number;
+    uint8_t previous_cycle_number;
     BatteryChargingState battery_charging_state;
     bool batteryLimitReceived;
 } BatteryInfo;