title: Android 11 (API30) Set 'All files' permission programmatically
body: <p>In Android 11 (API30), is there a way to enable the 'All files' permission programmatically?</p>
  <blockquote>
  <p>On the Settings &gt; Privacy &gt; Permission manager &gt; Files and media page,
  each app that has the permission is listed under Allowed for all files</p>
  </blockquote>
  <p>Tried with <code>MANAGE_EXTERNAL_STORAGE</code>, but no luck.</p>