feat(demo): add landing page with docs (#1951)

docs/app/app-routing.module.ts

@@ -0,0 +1,24 @@
+import { ExtraOptions, RouterModule, Routes } from '@angular/router';
+import { NgModule } from '@angular/core';
+
+const routes: Routes = [
+  {
+    path: '',
+    loadChildren: './pages/pages.module#PagesModule',
+  },
+  {
+    path: '**',
+    redirectTo: '',
+  },
+];
+
+const config: ExtraOptions = {
+  useHash: false,
+};
+
+@NgModule({
+  imports: [RouterModule.forRoot(routes, config)],
+  exports: [RouterModule],
+})
+export class AppRoutingModule {
+}