feat(typeahead): typeahead list span entire length of input

[vision10]

Typeahead list or results should span the entire length of input.
If this is the way it was thought out, could you add a feature enabling this kind of behavior with a global setting or on each input?

[jsshandle]

The following workaround helps to achieve the desired behavior in the current version.

1. Reference the input element inside the component:

export class MyComponent {

  @ViewChild('input')
  inputRef: ElementRef;

  options = ['A1', 'B2', 'C3'];

  value = '';
}

2. Use the clientWidth property of this element to influence the width of the result list:

<input
    #input
    [(ngModel)]="value"
    [typeahead]="options"
    [typeaheadItemTemplate]="itemTemplate"
    class="form-control">

<ng-template #itemTemplate let-model="item" let-index="index">
  <div [style.width.px]="inputRef.nativeElement.clientWidth - 40">{{model}}</div>
</ng-template>