Updates

• Setup unit tests with jest for Angular example
• Update disagg example response
• Add select menu for example
• Update dependencies

example/src/app/app.component.html

-<div #example></div>
+<div class="container">
+  <select name="Component" (change)="onComponentChange($event.target.value)">
+    <option
+      *ngFor="let disagg of data.disaggs[0].data"
+      [value]="disagg?.component"
+    >
+      {{ disagg?.component }}
+    </option>
+  </select>
+
+  <div #example></div>
+</div>