FR: Add target label to entities, just like logbook card

[Mariusthvdb]

Only today did I learn we can add entities to the logbook card by targeting the label

type: logbook
target:
  label_id: door

this a really powerful, and Ive quickly moved the auto-entities card I had in place doing the exact same thing.

Makes me wonder if we couldn't have that same functionality in eg entities card, so we could replace even more auto-entities cards ;-)

would be a great addition to the core config options, so please consider the options for this request,
thanks
(I just wrote this in the FR section, but realized these go here... so pardon my double post)