Custom "Show entity state" entity

[Mystically11]

The card uses the entity state from the entity selected for "toggling", but let's say for an example I want to show a temperature sensor value as the entity state on the card, but i want the actual entity for toggling to be a light so it can be turned on by clicking on the card.

This is technically possible by just calling a service but it won't work for things like more info, since that'll just show the temperature graph so this would be a nice feature to add