catalog-client: change entities interface, add fields support (#3296)

plugins/rollbar/src/components/RollbarHome/RollbarHome.test.tsx

@@ -52,7 +52,7 @@ describe('RollbarHome component', () => {
               catalogApiRef,
               ({
                 async getEntities() {
-                  return [];
+                  return { items: [] };
                 },
               } as Partial<CatalogApi>) as CatalogApi,
             ],

plugins/rollbar/src/hooks/useRollbarEntities.ts

@@ -28,8 +28,8 @@ export function useRollbarEntities() {
     configApi.getString('organization.name');
 
   const { value, loading, error } = useAsync(async () => {
-    const entities = await catalogApi.getEntities();
-    return entities.filter(entity => {
+    const response = await catalogApi.getEntities();
+    return response.items.filter(entity => {
       return !!entity.metadata.annotations?.[ROLLBAR_ANNOTATION];
     });
   }, [catalogApi]);