title: Angular 7, create import annotation (decorator?)
body: <p>I'm not sure what these are called but I want to create a custom annotation for imports. For example, I can do the following anywhere in my project:</p>
  
  <pre><code>import { SomeComponent } from '@app/components/some.component';
  </code></pre>
  
  <p>I'm talking about the <code>@app</code> part. No matter what file I'm in, <code>@app</code> will always take me to the <code>src/app</code> folder. How do I make my own? </p>
  
  <p>If I had a file inside <code>project/foo/bar/myfile.ts</code>, how can I create an annotation that says <code>@bar</code> which takes them to the "bar" folder no matter where they are in the project folder structure.</p>
  
  <p>I want to be able to do this:</p>
  
  <pre><code>import { MyFile } from '@bar/myfile';
  </code></pre>
  
  <p>Any help would be appreciated. Thank you!</p>