title: Nlog Date layout need to get the datetime offset with the long date
body: <p>Tried </p>
  
  <pre><code>${longdate:format=yyyy-MM-ddTHH\\:mm:ss.ffffK} 
  </code></pre>
  
  <p>but its not writing in offset into the file using Nlog.
  Tried </p>
  
  <pre><code>${date:format=yyyy-MM-ddTHH\\:mm:ss.ffffK} 
  </code></pre>
  
  <p>it gives the offset and the time output.
  Even tried <code>zzz</code> instead of <code>K</code>.</p>
  
  <p>Can we give any other usage for getting the UTC offset in Nlog consoleLayout.Text?</p>