[Feature Request] Detect which charging card is currently being used

[RobBie1221]

Checklist

• I have filled out the template to the best of my ability.
• This only contains 1 feature request (if you have multiple feature requests, open one feature request for each feature request).
• This issue is not a duplicate feature request of previous feature requests.

Is your feature request related to a problem? Please describe.

I use my Bluecurrent charger for two different cars, one company car, one private car. I like to keep track of the energy consumption of my private car. The current sensors can be used to derive a total energy consumption, however it is not possible to detect whether the energy counter within the bluecurrent integration is for my company or private car.

Describe the solution you'd like

An entity that reflects which charging card is currently being used, either the ID or Name of the card, or maybe an alternative unique identifier to be able to distinguish between the two cars.

Describe alternatives you've considered

Additional context