title: Set Shortcut key for vim for Sorting all of the blocks of parent-child in .vimrc
body: <p>I want to set shortcut key to my vim editor(like php storm) for sorting all of the blocks of parent-child(tags) in html or other programming languages!
  <br>For example:</p>
  
  <pre><code>&lt;!DOCTYPE html&gt;
  &lt;html&gt;
  &lt;head&gt;
  &lt;meta charset="UTF-8"&gt;
  &lt;title&gt;&lt;/title&gt;
  &lt;/head&gt;
  &lt;body&gt;
  &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>
  
  <p>When i press <code>ctrl</code>+<code>alt</code>+<code>z</code>,My <code>*.html</code> file sorted like this:  </p>
  
  <pre><code>&lt;!DOCTYPE html&gt;
  &lt;html&gt;
      &lt;head&gt;
          &lt;meta charset="UTF-8"&gt;
          &lt;title&gt;&lt;/title&gt;
      &lt;/head&gt;
      &lt;body&gt;
      &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>
  
  <p>Is it possible? If it's, what should i add to my <code>.vimrc</code>?
  <br>I remember when i used phpstorm, we had shortcut key for such things!</p>