feat(checkout): implement authentication guard for checkout route and add bank account service

src/app/app.routes.server.ts

@@ -1,6 +1,10 @@
 import { RenderMode, ServerRoute } from '@angular/ssr';
 
 export const serverRoutes: ServerRoute[] = [
+  {
+    path: 'checkout',
+    renderMode: RenderMode.Client
+  },
   {
     path: '**',
     renderMode: RenderMode.Server