feat: pdf generation using product barcode images

barcodes/types.py

@@ -0,0 +1,21 @@
+from typing import TypedDict
+
+from models import BarcodeTemplate, Product
+
+
+class BarcodeData(TypedDict):
+    barcode: str
+    template: BarcodeTemplate
+    product: Product
+    num_duplicates: int
+
+
+class PdfBarcodeGenData(TypedDict):
+    barcode_value: str
+    text: str
+    num_duplicates: int
+
+
+class PdfBarcodeImageGenData(TypedDict):
+    num_duplicates: int
+    barcode_image_url: str