Search promotions/promoted search results

[lb-]

It would be great to have a section that covers the Promoted Search Results contrib module.

5.2 brings some new features to this and some user facing content would be helpful to explain this better.

See

• https://docs.wagtail.org/en/latest/reference/contrib/searchpromotions.html
• https://docs.wagtail.org/en/latest/releases/5.2.html#external-links-in-promoted-search-results