added bookmark count number in collections view

lib/pages/collections_list_page.dart

@@ -20,6 +20,7 @@ class CollectionsListPage extends StatefulWidget {
 
 class _CollectionsListPageState extends State<CollectionsListPage> {
   bool addingNewBookmark = false;
+  final bookmarkCountMap = Storage.loadPerCollectionBookmarkCount();
 
   Widget bottomSheetBuilder(BuildContext context) {
     final titleTextFieldController = TextEditingController(
@@ -53,6 +54,11 @@ class _CollectionsListPageState extends State<CollectionsListPage> {
       title: Text(collection.name),
       onTap: () => navigateToCollection(collection.id),
       onLongPress: () => onEditCollection(collection),
+      leading: const Icon(Icons.list_rounded),
+      trailing: Text(
+        bookmarkCountMap[collection.id]?.toString() ?? '0',
+        style: Theme.of(context).textTheme.bodyMedium,
+      ),
     );
   }