Support more than one EV in the same integration

[WayeeWang]

Is your feature request related to a problem? Please describe.
I have two EVs that need to be charged smartly. Currently the integration can take only one SOC entity.

Describe the solution you'd like
Provide the possibility to configure more than one SOC entities, among which one can be (either manually or automatically via automation) selected to control the charging session.

Describe alternatives you've considered
NULL

Additional context
With the push and demand of green fleet, it's more and more common that families own more than one EV to be charged smartly.

[jonasbkarlsson]

It's possible to have multiple instances of the integration in order to charge multiple EVs. Would that solve your need?

There is currently no coordination between multiple instances of the integration, but it's on the to-do-list to add such coordination.

[WayeeWang]

Thank you for the swift reply @jonasbkarlsson .
I'll take give it a try and see if multi-instance setup can sort of solve the need, and will report back here.

[soren-norgaard]

@jonasbkarlsson sounds great with this on the backlog, in my use case I would like to be able to automate having two cars to charge sequentially due to grid limitations they can't charge in parallel.