Hierarchy v2 sample

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

fiori/db/data/sap.capire.bookshop-GenreHierarchy.csv

@@ -0,0 +1,16 @@
+ID;parent_ID;name;hierarchyLevel;drillState
+10;;Fiction;0;expanded
+11;10;Drama;1;leaf
+12;10;Poetry;1;leaf
+13;10;Fantasy;1;leaf
+14;10;Science Fiction;1;leaf
+15;10;Romance;1;leaf
+16;10;Mystery;1;leaf
+17;10;Thriller;1;leaf
+18;10;Dystopia;1;leaf
+20;;Non-Fiction;0;expanded
+19;10;Fairy Tale;1;leaf
+21;20;Biography;1;expanded
+22;21;Autobiography;2;leaf
+23;20;Essay;1;leaf
+24;20;Speech;1;leaf