Update code sample

packages/products/db/schema.cds

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+namespace sap.capire.products;
+
+using { Currency, managed, sap.common.CodeList } from '@sap/cds/common';
+
+entity Products : managed {
+  key ID   : String;
+  title    : localized String(111);
+  descr    : localized String(1111);
+  stock    : Integer;
+  price    : Decimal(9,2);
+  currency : Currency;
+  category : Association to Categories;
+}
+
+entity Categories : CodeList {
+  key ID   : Integer;
+  parent   : Association to Categories;
+  children : Composition of many Categories on children.parent = $self;
+}

packages/products/index.cds

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+using from './db/schema';

packages/products/package.json

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+{
+  "name": "@sap/products",
+  "version": "1.0.0",
+  "description": "A reuse package providing domain models and services to manage product catalogs.",
+  "repository": "https://github.com/SAP-samples/cloud-cap-samples.git",
+  "license": "SAP SAMPLE CODE LICENSE",
+  "dependencies": {
+    "@sap/cds": "latest",
+    "express": "*"
+  },
+  "files": [
+    "db",
+    "index.cds"
+  ]
+}