add support to the new frontend system

Signed-off-by: Nurit Izrailov <nuriti@spotify.com>

packages/app-next/app-config.yaml

@@ -43,6 +43,8 @@ app:
     - entity-card:org/ownership
     - entity-card:org/user-profile
 
+    - entity-content:kubernetes/kubernetes
+
   # scmAuthExtension: >-
   #   createScmAuthExtension({
   #     id: 'apis.scmAuth.addons.ghe',

packages/app-next/src/App.tsx

@@ -48,6 +48,7 @@ import {
 } from '@backstage/integration-react';
 import { createSignInPageExtension } from '@backstage/frontend-plugin-api';
 import { SignInPage } from '@backstage/core-components';
+import kubernetesPlugin from '@backstage/plugin-kubernetes/alpha';
 
 /*
 
@@ -121,6 +122,7 @@ const app = createApp({
     userSettingsPlugin,
     homePlugin,
     appVisualizerPlugin,
+    kubernetesPlugin,
     ...collectedLegacyPlugins,
     createExtensionOverrides({
       extensions: [