title: How to show a window without stealing focus on macOS?
body: <p>I was wondering how could spotlight floating with focus, and another window still has focus!  </p>
  
  <p><a href="https://i.stack.imgur.com/9PKOV.png" rel="noreferrer"><img src="https://i.stack.imgur.com/9PKOV.png" alt="enter image description here"></a></p>
  
  <p>I could easy make a window floating over all other window with <code>window?.level = Int(CGWindowLevelForKey(.maximumWindow))</code>,but I cannot let two windows both has focus, help!</p>
  
  <p>Is there any function like <code>ShowWithoutActivating</code> in Cocoa?</p>