title: How to add new tab on publish form in ExpressionEngine 2.x
body: <p>I’m writing an extension that called when an entry is submitted.<br>
  Now i want to add a tab with few fields in publish from?  </p>
  
  <p>Can i do this from extension? </p>
  
  <p>I know there are EE1.x hooks - <code>publish_form_new_tabs, publish_form_new_tabs_block</code> ....<br>
  but i need this for EE 2.x</p>