feat: shipping warehouse and cost

models/service.py

@@ -13,12 +13,22 @@ class Service(BaseModel):
     category_id = Column(Integer, ForeignKey('service_categories.id'), nullable=False, comment='ID категории услуги')
     category = relationship('ServiceCategory', lazy='joined')
 
-    price = Column(Double, nullable=False, comment='Стоимость услуги')
+    price = Column(
+        Double,
+        nullable=False,
+        comment='Стоимость услуги'
+    )
+    cost = Column(
+        Double,
+        nullable=False,
+        server_default='0',
+        comment='Себестоимость услуги'
+    )
+
     service_type = Column(Integer,
                           server_default=f'{enums.service.ServiceType.DEAL_SERVICE}',
                           nullable=False,
                           comment='Тип услуги')
-
     price_ranges = relationship('ServicePriceRange',
                                 back_populates='service',
                                 lazy='selectin',