title: Add fields in internal product page shopify
body: <p>Im new with shopify and i want to add a new field in the internal product page, but i dont want to use an app to do it for me, i want to do an app that add this field, for example with odoo you can create a module that extend the model and view and show the new field.</p>
  
  <p>Thanks a lot</p>
  
  <p>John</p>