Hierarchy v2 sample

Including
- CDS OData V2 Adapter Proxy
- OData V2
- Fiori Elements V2
- SAPUI5
- List Report (type `TreeTable`)
- `@sap.hierarchy` annotations

fiori/server.js

@@ -1 +1,5 @@
-module.exports = require('@capire/bookstore/server.js')
+const cds = require("@sap/cds");
+const proxy = require("@sap/cds-odata-v2-adapter-proxy");
+cds.on("bootstrap", app => app.use(proxy()));
+
+module.exports = require('@capire/bookstore/server.js')