feat: add localisation

lib/views/widgets/product_tile.dart

@@ -3,6 +3,8 @@ import 'dart:io';
 import 'package:flutter/material.dart';
 import 'package:kooltab2/models/product.dart';
 
+import '../../l10n/app_localizations.dart';
+
 class ProductTile extends StatelessWidget {
   final Product product;
   final bool enabled;
@@ -20,6 +22,7 @@ class ProductTile extends StatelessWidget {
   Widget build(BuildContext context) {
     final theme = Theme.of(context);
     final scheme = theme.colorScheme;
+    final l10n = AppLocalizations.of(context);
 
     final outOfStock = product.stockQuantity <= 0;
     final lowStock =
@@ -101,7 +104,7 @@ class ProductTile extends StatelessWidget {
                         borderRadius: BorderRadius.circular(999),
                       ),
                       child: Text(
-                        'OUT OF STOCK',
+                        l10n.outOfStock,
                         style: TextStyle(
                           color: scheme.onError,
                           fontWeight: FontWeight.w800,