app-backend,cli: add support for injecting full config based on serialized schema

packages/backend/src/plugins/app.ts

@@ -17,9 +17,13 @@
 import { createRouter } from '@backstage/plugin-app-backend';
 import { PluginEnvironment } from '../types';
 
-export default async function createPlugin({ logger }: PluginEnvironment) {
+export default async function createPlugin({
+  logger,
+  config,
+}: PluginEnvironment) {
   return await createRouter({
     logger,
+    config,
     appPackageName: 'example-app',
   });
 }