added some base code

flightscore/src/app-root.ts

@@ -1,6 +1,8 @@
 import { LitElement, html } from 'lit';
 import { customElement } from 'lit/decorators.js';
+import './pages/not-found-page';
 import './components/nav-bar';
+import './components/footer-bar';
 import { Router } from './router/router';
 import './pages/home-page';
 
@@ -23,6 +25,7 @@ export class AppRoot extends LitElement {
     return html`
       <nav-bar></nav-bar>
       <main id="outlet"></main>
+      <footer-bar></footer-bar>
     `;
   }
 }