Provide integration with Drupal Commerce checkout registration

Thank you very much for this great module!

Problem / Context:

Drupal Commerce as a very important Drupal Module / Distribution. The checkout contains a login and two registration forms:

• Before Checkout
• After checkout (also see #2857157: Implement registration after guest checkout for the after-checkout registration.)

None of the forms are containing the real name logic. The're all displaying the user name field and default description.

Proposed solution:

Hook into the both registration forms in Drupal commerce and apply the real name logic.