Hooked notifications to status changes on document upload - some refactorings

lib/features/documents/view/widgets/new_items_loading_widget.dart

@@ -0,0 +1,10 @@
+import 'package:flutter/material.dart';
+
+class NewItemsLoadingWidget extends StatelessWidget {
+  const NewItemsLoadingWidget({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return const CircularProgressIndicator();
+  }
+}