title: How to show tooltip on @ng-select/ng-select options
body: <p>I am using @ng-select/ng-select@2.3.6 in my application and i have a very long text in array.</p>
  
  <p>So, the complete text not visible in dropdown list so I want to show the title/ tooltip over the each and every options</p>
  
  <p>I tried,</p>
  
  <pre><code>let listArray = [{name: 'Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s'}];
  
  &lt;ng-select placeholder="Select" (change)="onChange($event)"&gt;
        &lt;ng-option *ngFor="let list of listArray" 
         title="{{list.name}}"&gt; {{list.name}} &lt;/ng-option&gt;
   &lt;/ng-select&gt;
  </code></pre>
  
  <p>But no luck</p>