Refactor registers to flat membership model and move apps to root

src/apps/exchange/state_corp_services.py

@@ -23,7 +23,7 @@ from apps.parsers.models import (
     InspectionRecord,
     ProcurementRecord,
 )
-from apps.registers.models import Organization
+from registers.models import Organization
 from cryptography.hazmat.primitives.ciphers.aead import AESGCM
 from django.conf import settings
 from django.utils import timezone