Fiori Tree Views (#816)

* add read only tree table and value help
* rm tree table in catalogservice
* Update cat-service.cds
* i18n and object page
* hana workaround, local messaging and rm virtual
* move hierarchy to fiori
* Update admin-service.cds

* Update common.cds

* fix after moving to fiori

* fix UI filter

* file-based-messaging in hybrid

* review fixes

* Update services.cds

* make bookshop Books fiori.draft.enabled

* add simplest handler for sqlite

* adapt test and link in csvs

* .

* Reverting to human-readable UUIDs :)

* Less obstrusive workaround

* typo

* Update fiori/app/common.cds

* Update fiori/app/common.cds

* Workaround for stupid GUID check in Fiori client

* ...

* Simplified mock support for recursive hierarchies in SQLite :)

* missing comma

* Rudimentary tree support for Genres on SQLite

* ?.

* fixed copy error

* using subselect to determine leafs

* Revert "using subselect to determine leafs"

This reverts commit f01ddaea1f.

* Using scalar subselect for DrillState

* .

---------

Co-authored-by: D070615 <olena.timrova@sap.com>
Co-authored-by: D045778 <johannes.vogel@sap.com>
Co-authored-by: Daniel Hutzel <daniel.hutzel@sap.com>

test/odata.test.js

@@ -17,8 +17,8 @@ describe('cap/samples - Bookshop APIs', () => {
   })
 
   it('serves ListOfBooks?$expand=genre,currency', async () => {
-    const Mystery = { ID: 16, name: 'Mystery', descr: null, parent_ID: 10 }
-    const Romance = { ID: 15, name: 'Romance', descr: null, parent_ID: 10 }
+    const Mystery = { name: 'Mystery' }
+    const Romance = { name: 'Romance' }
     const USD = { code: 'USD', name: 'US Dollar', descr: null, symbol: '$' }
     const { data } = await GET `/browse/ListOfBooks ${{
       params: { $search: 'Po', $select: `title,author`, $expand:`genre,currency` },