title: Woocommerce Additional Message on Product Variation
body: <p>I have a Wordpress website build with Woocommcerce. I want to add some extra fields for users to be able to personalize their products ( some text inputs for them to write whatever  they want). I thinks this needs to be done with custom attributes but I'm not sure.</p>
  
  <p>I have tried this to add an extra attribute type:</p>
  
  <pre><code>add_filter("product_attributes_type_selector" , function( $array ){
      $array["textfield"] = __( 'Textfield', 'woocommerce' );
      return $array ;
  });
  </code></pre>
  
  <p>I have no idea where to go on from this or if this is the right approach.</p>
  
  <p><strong>IMPORTANT NOTE:</strong> I don't want to use any plugins, so don't recommend any please</p>