title: Generate UUID on kotlin-multiplatform?
body: <p>Are there any kotlin-multiplatform common functions to get a UUID/GUID?</p>
  
  <pre><code> // ideally something like this
   val newUUID = UUID() // "1598044e-5259-11e9-8647-d663bd873d93"
   println("newUUID = $newUUID")
  </code></pre>
  
  <p>I'd prefer not to make separate Android and iOS versions using expect-actual.</p>