title: ember mirage get data from other file than config.js
body: <p>in config.js i have:</p>
  
  <pre><code>this.get('/tests', function() {
    return {
  
   //data here
  
   }
  </code></pre>
  
  <p>How can I get data from other file in mirage instead of config.js? For example from mirage/abc/tests.js
  Thanks for answer.</p>