feat(challenge 35): add challenge 35 about memoization

apps/performance/memoized/src/app/app.component.ts

@@ -0,0 +1,28 @@
+import { NgIf } from '@angular/common';
+import { Component } from '@angular/core';
+import { generateList } from './generateList';
+import { PersonListComponent } from './person-list.component';
+
+@Component({
+  standalone: true,
+  imports: [PersonListComponent, NgIf],
+  selector: 'app-root',
+  template: `
+    <p>Performance is key!!</p>
+    <button
+      (click)="loadList = true"
+      class="border border-black p-2 rounded-md">
+      Load List
+    </button>
+
+    <app-person-list
+      *ngIf="loadList"
+      class="max-w-2xl"
+      [persons]="persons"
+      title="Persons" />
+  `,
+})
+export class AppComponent {
+  persons = generateList();
+  loadList = false;
+}