Add information of EV charger (for car) to available values

[GolfOWL]

First I want to thank all of you, especially mkaiser, for this great add-on in HA. I have had a PV system since yesterday and the add-on has made it very easy for me to integrate it into HA.

In addition to the inverter and the battery, I also have a wallbox from Sungrow, which is connected and controlled via the management system.

As a result, I can imagine that corresponding parameters are also available for the "EV Charger1", which can be integrated into HA.

I would like to address such an extension with this feature request.

I would like to thank you in advance for your feedback and hope that I have done this "correctly" in the form of this request.