title: How to create onOpen() function on all worksheets inserted or created in a workspace with GAS?
body: <p>I have the following function that creates a menun in a spreadsheet:</p>
  <pre><code>function onOpen() {
  var ui = SpreadsheetApp.getUi();
   ui.createMenu('Scripts')
     .addItem('Label1', 'function1')
     .addSeparator()
     .addItem('Label2', 'function2')
     .addSeparator()
     .addItem('Label3', 'function3')
     .addToUi();
  }
  </code></pre>
  <p>I have a workspace and I would like all worksheets inserted or created in that workspace to receive this onOpen() function automatically. It's possible?</p>