feat: alphabet list, change Layout etc

lib/services/product_service.dart

@@ -21,6 +21,7 @@ abstract class ProductService {
     required String category,
     required int stockQuantity,
     required int lowStockThreshold,
+    bool infiniteStock = false,
     required int priceInCents,
     required String? imagePath,
   });
@@ -47,6 +48,7 @@ class DriftProductService implements ProductService {
       category: row.category,
       stockQuantity: row.stockQuantity,
       lowStockThreshold: row.lowStockThreshold,
+      infiniteStock: row.infiniteStock,
       priceInCents: row.priceInCents,
       imagePath: row.imagePath,
       active: row.active,
@@ -89,6 +91,7 @@ class DriftProductService implements ProductService {
     required String category,
     required int stockQuantity,
     required int lowStockThreshold,
+    bool infiniteStock = false,
     required int priceInCents,
     required String? imagePath,
   }) async {
@@ -101,6 +104,7 @@ class DriftProductService implements ProductService {
             category: category,
             stockQuantity: stockQuantity,
             lowStockThreshold: lowStockThreshold,
+            infiniteStock: Value(infiniteStock),
             priceInCents: priceInCents,
             imagePath: Value(imagePath),
           ),
@@ -118,6 +122,7 @@ class DriftProductService implements ProductService {
         category: Value(product.category),
         stockQuantity: Value(product.stockQuantity),
         lowStockThreshold: Value(product.lowStockThreshold),
+        infiniteStock: Value(product.infiniteStock),
         priceInCents: Value(product.priceInCents),
         imagePath: Value(product.imagePath),
         active: Value(product.active),