Move dart & flutter packages to packages folder on root

packages/dart/lib/src/error.dart

@@ -0,0 +1,33 @@
+// This file is automatically generated, so please do not edit it.
+// Generated by `flutter_rust_bridge`@ 2.0.0-dev.32.
+
+// ignore_for_file: invalid_use_of_internal_member, unused_import, unnecessary_import
+
+import 'frb_generated.dart';
+import 'package:flutter_rust_bridge/flutter_rust_bridge_for_generated.dart';
+import 'package:freezed_annotation/freezed_annotation.dart' hide protected;
+part 'error.freezed.dart';
+
+@freezed
+sealed class PaymentError with _$PaymentError implements FrbException {
+  const PaymentError._();
+
+  const factory PaymentError.amountOutOfRange() = PaymentError_AmountOutOfRange;
+  const factory PaymentError.alreadyClaimed() = PaymentError_AlreadyClaimed;
+  const factory PaymentError.generic({
+    required String err,
+  }) = PaymentError_Generic;
+  const factory PaymentError.invalidInvoice() = PaymentError_InvalidInvoice;
+  const factory PaymentError.invalidPreimage() = PaymentError_InvalidPreimage;
+  const factory PaymentError.lwkError({
+    required String err,
+  }) = PaymentError_LwkError;
+  const factory PaymentError.pairsNotFound() = PaymentError_PairsNotFound;
+  const factory PaymentError.persistError() = PaymentError_PersistError;
+  const factory PaymentError.sendError({
+    required String err,
+  }) = PaymentError_SendError;
+  const factory PaymentError.signerError({
+    required String err,
+  }) = PaymentError_SignerError;
+}