Streamlined eslint usage for eslint9 w/ cds8 (#719)

* Streamlined eslint usage

* import from @sap/cds instead of @sap/cds/lib

* Using @sap/cds/eslint.js

* eslint.config.mjs aktualisieren

* Adjusted eslint usage for eslint9 with cds8

orders/srv/orders-service.js

@@ -29,7 +29,7 @@ class OrdersService extends cds.ApplicationService {
   /** order changed -> broadcast event */
   orderChanged (product, deltaQuantity) {
     // Emit events to inform subscribers about changes in orders
-    console.log ('> emitting:', 'OrderChanged', { product, deltaQuantity })
+    console.log ('> emitting:', 'OrderChanged', { product, deltaQuantity }) // eslint-disable-line no-console
     return this.emit ('OrderChanged', { product, deltaQuantity })
   }