Spring cleaning, part 2 (#813)

* Remove OData v2 show case: Genres TreeView
* Refactored bookstore and fiori services: consolidate routing and remove deprecated files
* Add Jest configuration file with silent mode enabled
* Refactor test files: streamline imports and remove redundant code
* Change price field type to Price for better clarity and precision
* Example for separation of concerns: access-control.cds

bookshop/package.json

@@ -6,8 +6,7 @@
     "app",
     "srv",
     "db",
-    "index.cds",
-    "index.js"
+    "index.cds"
   ],
   "devDependencies": {
     "@cap-js/sqlite": "*"