feat: ✨ Add feature flag onchain management + manage bridge feature flag

lib/application/feature_flags.dart

@@ -0,0 +1,31 @@
+import 'package:aewallet/application/api_service.dart';
+import 'package:aewallet/infrastructure/repositories/feature_flags_repository.dart';
+import 'package:aewallet/model/available_networks.dart';
+import 'package:aewallet/util/universal_platform.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:riverpod_annotation/riverpod_annotation.dart';
+
+part 'feature_flags.g.dart';
+
+@riverpod
+FeatureFlagsRepositoryImpl _featureFlagsRepository(
+  Ref ref,
+) =>
+    FeatureFlagsRepositoryImpl();
+
+@riverpod
+Future<bool?> getFeatureFlag(
+  Ref ref,
+  AvailableNetworks network,
+  String applicationCode,
+  String featureCode,
+) async {
+  final apiService = ref.watch(apiServiceProvider);
+  return ref.watch(_featureFlagsRepositoryProvider).getFeatureFlag(
+        network,
+        apiService,
+        applicationCode,
+        featureCode,
+        UniversalPlatform.value.name.toLowerCase(),
+      );
+}

lib/domain/models/feature_flags.dart

@@ -0,0 +1,15 @@
+import 'package:freezed_annotation/freezed_annotation.dart';
+
+part 'feature_flags.freezed.dart';
+part 'feature_flags.g.dart';
+
+@freezed
+class FeatureFlags with _$FeatureFlags {
+  const factory FeatureFlags({
+    required String applicationCode,
+    required Map<String, Map<String, bool>> features,
+  }) = _FeatureFlags;
+
+  factory FeatureFlags.fromJson(Map<String, dynamic> json) =>
+      _$FeatureFlagsFromJson(json);
+}