title: UISwitch, something similar for Mac?
body: <p>I’m sure most of you are familiar with the <code>UISwitch</code> on iOS.</p>
  <p>Is their any existing project trying to implement something like a <code>UISwitch</code> for macOS and AppKit?</p>
  <p>If not, where would one start to make one? I see them frequently and can think of so many uses.</p>