Fiori Tree Views towards GA (#839)

* Fiori Tree Views towards GA

* Also automate addition of Aggregation.RecursiveHierarchy

* Cleanup models for Genres Tree View

* Implementing @hierarchy shortcut

* .

* Formatting

* Using verbose config

fiori/app/services.cds

@@ -5,6 +5,7 @@
 using from './admin-authors/fiori-service';
 using from './admin-books/fiori-service';
 using from './browse/fiori-service';
+using from './genres/fiori-service';
 
 using from './common';
 using from '@capire/bookstore/srv/mashup';