feat(anchorScrolling): create challenge

apps/anchor-scrolling/src/app/foo.component.ts

@@ -0,0 +1,15 @@
+import { Component } from '@angular/core';
+import { NavButtonComponent } from './nav-button.component';
+
+@Component({
+  standalone: true,
+  imports: [NavButtonComponent],
+  selector: 'app-foo',
+  template: `
+    Welcome to foo page
+    <nav-button href="home" class="fixed top-3 left-1/2">Home Page</nav-button>
+    <div class="h-screen bg-blue-200">section 1</div>
+    <div class="h-screen bg-red-200">section 2</div>
+  `,
+})
+export class FooComponent {}