Moves more services and registrations "up", removes AspNetCoreComposer logic and moves to AddWebComponents

src/Umbraco.Core/Trees/SearchableTreeCollectionBuilder.cs

@@ -0,0 +1,13 @@
+using Microsoft.Extensions.DependencyInjection;
+using Umbraco.Core.Composing;
+
+namespace Umbraco.Core.Trees
+{
+    public class SearchableTreeCollectionBuilder : LazyCollectionBuilderBase<SearchableTreeCollectionBuilder, SearchableTreeCollection, ISearchableTree>
+    {
+        protected override SearchableTreeCollectionBuilder This => this;
+
+        //per request because generally an instance of ISearchableTree is a controller
+        protected override ServiceLifetime CollectionLifetime => ServiceLifetime.Scoped;
+    }
+}