message: feat(typeahead): show options on focus and click
  Workaround for the issue  (typeahead): show available choices onFocus when minLength == 0
diff: @@ -222,6 +222,7 @@ export class TypeaheadDirective implements OnInit, OnDestroy {
  }
  }
  + @HostListener('click')
  @HostListener('focus')
  onFocus(): void {
  if (this.typeaheadMinLength === 0) {
  