♻️(backend) create main invoice in order create endpoint

As a main invoice is created at the first payment scgedule installment,
we create it at order creation, and use it to store the billing address.

CHANGELOG.md

@@ -52,6 +52,7 @@ and this project adheres to
 
 ### Changed
 
+- Rework order statuses
 - Update certificate template to render logo of organization if
   it has a value.
 - Add `currency` field to `OrderPaymentSerializer` serializer

src/backend/joanie/core/flows/order.py

@@ -38,7 +38,7 @@ def _can_be_assigned(self):
         target=enums.ORDER_STATE_ASSIGNED,
         conditions=[_can_be_assigned],
     )
-    def assign(self):
+    def assign(self, billing_address=None):
         """
         Transition order to assigned state.
         """

src/backend/joanie/tests/payment/test_backend_lyra.py

@@ -34,7 +34,7 @@
     PaymentProviderAPIException,
     RegisterPaymentFailed,
 )
-from joanie.payment.factories import CreditCardFactory
+from joanie.payment.factories import BillingAddressDictFactory, CreditCardFactory
 from joanie.payment.models import CreditCard, Transaction
 from joanie.tests.base import BaseLogMixinTestCase
 from joanie.tests.payment.base_payment import BasePaymentTestCase