Entity search - take one (#15951)

* Add entity search endpoints (to be replaced with Examine based ones for content, media and member)

* Update OpenApi.json

src/Umbraco.Infrastructure/DependencyInjection/UmbracoBuilder.Services.cs

@@ -62,6 +62,7 @@ public static partial class UmbracoBuilderExtensions
         builder.Services.AddTransient<IPartialViewPopulator, PartialViewPopulator>();
         builder.Services.AddUnique<IContentListViewService, ContentListViewService>();
         builder.Services.AddUnique<IMediaListViewService, MediaListViewService>();
+        builder.Services.AddUnique<IEntitySearchService, EntitySearchService>();
 
         return builder;
     }