feat: deal product services

enums/service.py

@@ -0,0 +1,13 @@
+from enum import unique, IntEnum
+
+
+@unique
+class ServiceType(IntEnum):
+    DEAL_SERVICE = 0
+    PRODUCT_SERVICE = 1
+
+
+SERVICE_TYPE_LABELS = {
+    ServiceType.DEAL_SERVICE: 'Услуга для сделки',
+    ServiceType.PRODUCT_SERVICE: 'Услуга для товара',
+}