Implement Header Menu Left

src/app/app.ts

@@ -2,10 +2,11 @@ import { Component, signal } from '@angular/core';
 import { RouterOutlet } from '@angular/router';
 import { Switch } from './components/switch/switch';
 import { Dropdown, DropdownOption } from './components/dropdown/dropdown';
+import { HeaderMenu } from './ui/header-menu/header-menu';
 
 @Component({
   selector: 'app-root',
-  imports: [RouterOutlet, Switch, Dropdown],
+  imports: [RouterOutlet, Switch, Dropdown, HeaderMenu],
   templateUrl: './app.html',
   styleUrl: './app.scss'
 })