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

.vscode/settings.json

@@ -1,9 +1,8 @@
 {
   "files.exclude": {
-    ".reuse/**": true,
-    "**/.gitignore": true,
-    "**/.vscode": true,
-    "LICENSES/**": true
+    "**/node_modules": true,
+    "LICENSES": true,
+    ".reuse": true
   },
   "debug.javascript.terminalOptions": {
     "skipFiles": [