Update CommerceStoreType.php

Missing use Drupal\Core\Config\Entity\ConfigEntityBundleBase;
Initial commit for the order entity type definition.
Add the order number + small corrections after review.
Add the hostname, the mail and the data.
Tweak the label and description for the default order type.
Add a description to the store type.
Encapsulate the save method in a try catch block.
The email should be an email. :).
Fixing some module typos and removing unnecessary interface function declarations.
Add the commerce_product module and entity types.