title: Ionic 4 - ion-input autocomplete from datalist
body: <p>Question is for ionic 4.
  I'm trying ti give a list of vale to ion-input. Since the list contains 200 items I'd like filter the list.
  Something like this:
  <a href="https://www.w3schools.com/tags/tryit.asp?filename=tryhtml5_datalist" rel="nofollow noreferrer">https://www.w3schools.com/tags/tryit.asp?filename=tryhtml5_datalist</a></p>
  
  <p>I already see this issue:
  <a href="https://github.com/ionic-team/ionic/issues/5702" rel="nofollow noreferrer">https://github.com/ionic-team/ionic/issues/5702</a>
  but the proposal solution doesn't work for Ionic 4:</p>
  
  <pre><code>&lt;ion-input list="browsers" name="browser" placeholder="Choose category"&gt;
      &lt;ion-label&gt;Browsers&lt;/ion-label&gt;
  &lt;/ion-input&gt;
  &lt;datalist id="browsers"&gt;
      &lt;option value="Internet Explorer"/&gt;
      &lt;option value="Firefox"/&gt;
      &lt;option value="Chrome"/&gt;
      &lt;option value="Opera"/&gt;
      &lt;option value="Safari"/&gt;
  &lt;/datalist&gt;
  </code></pre>
  
  <p>Thanks</p>