Add layout

src/app/layout/app.sidebar.component.ts

@@ -1,8 +1,11 @@
 import { Component, ElementRef } from '@angular/core';
 import { LayoutService } from "./service/app.layout.service";
+import {AppMenuComponent} from './app.menu.component';
 
 @Component({
     selector: 'app-sidebar',
+    standalone: true,
+    imports: [AppMenuComponent],
     templateUrl: './app.sidebar.component.html'
 })
 export class AppSidebarComponent {