photos_with_apple_metadata view should include labels

[simonw]

https://dogsheep-photos.dogsheep.net/public/photos_with_apple_metadata?place_city=New+Orleans&_facet=place_city&_facet_array=albums&_facet_array=persons

Here's one way to add that:

        select
          rowid,
          photo,
          (
            select
              json_group_array(
                json_object(
                  'label',
                  normalized_string,
                  'href',
                  '/photos/labelled?_hide_sql=1&label=' || normalized_string
                )
              )
            from
              labels
            where
              labels.uuid = photos_with_apple_metadata.uuid
          ) as labels,
          date,