title: Maintain Xcode Run Script Phase after swift package generate-xcodeproj
body: <p>I have a Run Script phase in my Xcode project. After I update my dependencies with SPM via <code>swift package update</code> I have to update my project with <code>swift package generate-xcodeproj</code>.</p>
  
  <p>Without using a rubygem, pod spec or other 3rd part tool, how Can I maintain that build phase? Can I add Run Script phase to xcconfig file somehow?</p>