title: treeview with select option, to add selected in odoo
body: <p>I need to create a popup treeview like the one in picture below, and then can select as many items as I need to be inserted to the original tree-view </p>
  
  <p><a href="https://i.stack.imgur.com/KBx7h.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/KBx7h.png" alt="enter image description here"></a></p>