Implemented settings, new scan, enhanced UI/UX

lib/feature/scan/util.dart

@@ -0,0 +1,35 @@
+import 'package:hl_lieferservice/feature/scan/model/article.dart';
+
+import '../../model/delivery.dart';
+
+Map<String, ArticleGroup> initializeArticleGroups(List<Delivery> deliveries) {
+  Map<String, ArticleGroup> articleGroups = {};
+
+  // Alle Artikel aus allen Lieferungen durchgehen
+  for (var delivery in deliveries) {
+    for (var article in delivery.articles) {
+      if (articleGroups.containsKey(article.articleNumber)) {
+        // Artikel bereits vorhanden, Anzahl erhöhen
+        if (article.scannable) {
+          articleGroups[article.articleNumber]!.scannedCount += article.scannedAmount;
+          articleGroups[article.articleNumber]!.totalCount += article.amount;
+          articleGroups[article.articleNumber]!.deliveryIds.add(delivery);
+        }
+      } else {
+        if (article.scannable) {
+          // Neuer Artikel, hinzufügen
+          articleGroups[article.articleNumber] = ArticleGroup(
+            deliveryIds: {delivery},
+            articleName: article.name,
+            articleNumber: article.articleNumber,
+            scannedCount: article.scannedAmount,
+            internalRowId: article.internalId.toString(),
+            totalCount: article.amount,
+          );
+        }
+      }
+    }
+  }
+
+  return articleGroups;
+}