title: Programmatically add a new field in a template in sitecore
body: <p>In <code>Sitecore</code> is it possible to programmatically add a new field in a template? </p>
  
  <p>I have a template "<code>DictionaryName</code>", in this template I want to add a field "<code>Newname</code>" with its type "<code>Single-Line Text</code>".</p>