title: VSCode add .js extension on import autocomplete
body: <p>I am using <strong>VSCode</strong> and <strong>JavaScript ES6 Modules</strong>.</p>
  <p>If I <strong>autocomplete</strong> an <strong>import</strong> like this <code>import * as test from './test'</code>
  the <strong>.js</strong> ending on <code>./test</code> is <strong>missing</strong> and I have to add it <strong>manually</strong>.</p>
  <p>Is there a setting to <strong>automatically add the extension</strong>?</p>