Add attribute to zone indicating persons in zone

[frenck]

Proposed change

This PR adds a state attribute to the zone entity giving information about the state. The current state of a zone is the number of persons in that zone. This PR adds an entity_id attribute to the zone state that provides information on who those people are.

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[probot-home-assistant]

Hey there @home-assistant/core, mind taking a look at this pull request as it has been labeled with an integration (zone) you are listed as a code owner for? Thanks!
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[balloob]

persons or people?

For references to groups of a specific or general number, either people or persons may be used, but modern style guides tend to prefer people where earlier guides preferred persons, especially for countable groups.

https://www.merriam-webster.com/words-at-play/people-vs-persons

[frenck]

It are person entities... ? So, besides grammar, I'm unsure. It is referring to entities, not actual human beings.

🤷 I don't have a strong opinion, what do you think?

[MartinHjelmare]

I think persons is better as we're referring to a specific set of individuals:
https://www.merriam-webster.com/words-at-play/people-vs-persons

[balloob]

let's do persons.