move hierarchy to fiori

fiori/app/admin-books/fiori-service.cds

@@ -1,6 +1,13 @@
 using { AdminService } from '@capire/bookstore';
+using { sap.capire.bookshop } from '../../db/hierarchy';
 using from '../common'; // to help UI linter get the complete annotations
 
+extend service AdminService with {
+  @readonly 
+  @cds.search: {name}
+  entity GenreHierarchy as projection on bookshop.Genres;
+}
+
 ////////////////////////////////////////////////////////////////////////////
 //
 //	Books Object Page

fiori/app/common.cds

@@ -85,10 +85,6 @@ annotate my.Genres with @(
     }
 );
 
-annotate my.Genres with {
-  ID  @Common.Text : name  @Common.TextArrangement : #TextOnly;
-}
-
 ////////////////////////////////////////////////////////////////////////////
 //
 //	Genre Details