Add URL parameter to limit display to One car

[pkuehnel]

Discussed in #1110

^{Originally posted by ednax February 6, 2024}
Hi,

is it possible to select a single car to show in the overview?
Maybe something like http://:7190/Overview?car_id=1
I have access to two teslas and want to show the TSC-Overview in the car - but only the overview for the car I'm currently in.
Is that possible or maybe coud you please add this feature?

thanks
Ednax