title: How to set ChangeDetectionStrategy.OnPush as default strategy
body: <p>How to set the ChangeDetectionStrategy.OnPush as default strategy for every
  component in my app instead of writing on every component's template
  <code>changeDetection: ChangeDetectionStrategy.OnPush</code> ?</p>
  
  <p>Thanks</p>
  
  <p>Best Regards
  Mark Nebrat</p>