Added market place specific feature

kifi-app/lib/features/sales/providers/credit_notes_provider.dart

@@ -0,0 +1,75 @@
+import 'dart:async';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:dio/dio.dart';
+import '../../../core/network/dio_client.dart';
+import '../domain/credit_note.dart';
+import 'invoices_provider.dart';
+
+class CreditNotesNotifier extends AsyncNotifier<List<CreditNote>> {
+  @override
+  FutureOr<List<CreditNote>> build() async {
+    return _fetchCreditNotes();
+  }
+
+  Future<List<CreditNote>> _fetchCreditNotes() async {
+    try {
+      final response = await DioClient().dio.get('/credit-notes');
+      if (response.statusCode == 200) {
+        final List<dynamic> data = response.data;
+        return data.map((e) => CreditNote.fromJson(e)).toList();
+      }
+      return [];
+    } catch (e) {
+      return [];
+    }
+  }
+
+  Future<void> refresh() async {
+    state = const AsyncValue.loading();
+    try {
+      final creditNotes = await _fetchCreditNotes();
+      state = AsyncValue.data(creditNotes);
+    } catch (e, stack) {
+      state = AsyncValue.error(e, stack);
+    }
+  }
+
+  Future<CreditNote?> createCreditNote(int invoiceId, CreditNote creditNote) async {
+    try {
+      final response = await DioClient().dio.post(
+        '/invoices/$invoiceId/credit-notes',
+        data: creditNote.toJson(),
+      );
+      await refresh();
+      ref.refresh(invoicesProvider);
+      if (response.data != null) {
+        return CreditNote.fromJson(response.data);
+      }
+      return null;
+    } catch (e) {
+      if (e is DioException) {
+        throw Exception(
+          'Failed to process return: ${e.response?.statusCode} - ${e.response?.data}',
+        );
+      }
+      throw Exception('Failed to process return: $e');
+    }
+  }
+}
+
+final creditNotesProvider =
+    AsyncNotifierProvider<CreditNotesNotifier, List<CreditNote>>(CreditNotesNotifier.new);
+
+final invoiceCreditNotesProvider =
+    FutureProvider.family<List<CreditNote>, int>((ref, invoiceId) async {
+  try {
+    final response = await DioClient().dio.get('/invoices/$invoiceId/credit-notes');
+    if (response.statusCode == 200) {
+      final List<dynamic> data = response.data;
+      return data.map((e) => CreditNote.fromJson(e)).toList();
+    }
+    return [];
+  } catch (e) {
+    return [];
+  }
+});