Add ActiveEnergyMinus to the InverterValuesDef

In order to receive the total charging energy throughput from my battery inverter (Sunny Boy Storage 5.0, SBS5.0-10) I need the value from ActiveEnergyMinus. With ActiveEnergyPlus I receive only the total watt-hours of discharging. Therefore I added the decoding information for this value. I have tested this in connection with Home Assistant.

Battery Inverter	Home Assistant / MQTT