picture cards: add person image support

[Quentame]

Proposed change

Add doc for home-assistant/frontend#20593

Type of change

• Spelling, grammar or other readability improvements (current branch).
• Adjusted missing or incorrect information in the current documentation (current branch).
• Added documentation for a new integration I'm adding to Home Assistant (next branch).
  • I've opened up a PR to add logos and icons in Brands repository.
• Added documentation for a new feature I'm adding to Home Assistant (next branch).
• Removed stale or deprecated documentation.

Additional information

• Link to parent pull request in the codebase: picture cards: add person image support frontend#20593
• Link to parent pull request in the Brands repository:
• This PR fixes or closes issue: fixes #

Checklist

• This PR uses the correct branch, based on one of the following:
  • I made a change to the existing documentation and used the current branch.
  • I made a change that is related to an upcoming version of Home Assistant and used the next branch.
• The documentation follows the Home Assistant documentation standards.

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[home-assistant]

Hey there @home-assistant/frontend, mind taking a look at this feedback as it has been labeled with an integration (frontend) you are listed as a code owner for? Thanks!

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• @home-assistant unassign frontend Removes the current integration label and assignees on the feedback, add the integration domain after the command.
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• @home-assistant remove-label needs-more-information Remove a label (needs-more-information) on the feedback.

[c0ffeeca7]

Tiny tweak

[home-assistant]

Please take a look at the requested changes, and use the Ready for review button when you are done, thanks 👍

Learn more about our pull request process.

[c0ffeeca7]

Thank you, @Quentame 👍