Add amount field to ProductBarcode (#278)

* feat: add amount to ProductBarcode

* fix(model): 修复 ProductDetailsResponse 中 ProductBarcode amount 不能为 None 的问题

* refactor: Update .gitignore and setup.py according to review

pygrocy/data_models/product.py

@@ -1,5 +1,5 @@
 from datetime import datetime
-from typing import List
+from typing import List, Optional
 
 from pygrocy.base import DataModel
 from pygrocy.grocy_api_client import (
@@ -19,11 +19,16 @@
 class ProductBarcode(DataModel):
     def __init__(self, data: ProductBarcodeData):
         self._barcode = data.barcode
+        self._amount = float(data.amount) if data.amount else None
 
     @property
     def barcode(self) -> str:
         return self._barcode
 
+    @property
+    def amount(self) -> Optional[float]:
+        return self._amount
+
 
 class QuantityUnit(DataModel):
     def __init__(self, data: QuantityUnitData):

pygrocy/grocy_api_client.py

@@ -161,6 +161,7 @@ class CurrentVolatilStockResponse(BaseModel):
 
 class ProductBarcodeData(BaseModel):
     barcode: str
+    amount: Optional[float] = None
 
 
 class ProductDetailsResponse(BaseModel):