feat: direct call download api by cgo dart

ui/flutter/lib/api/native/model/invoke_request.dart

@@ -0,0 +1,19 @@
+import 'package:json_annotation/json_annotation.dart';
+
+part 'invoke_request.g.dart';
+
+@JsonSerializable()
+class InvokeRequest {
+  String method;
+  List<String> params;
+
+  InvokeRequest({
+    this.method = '',
+    this.params = const [],
+  });
+
+  factory InvokeRequest.fromJson(Map<String, dynamic> json) =>
+      _$InvokeRequestFromJson(json);
+
+  Map<String, dynamic> toJson() => _$InvokeRequestToJson(this);
+}

ui/flutter/lib/api/native/model/invoke_request.g.dart

@@ -0,0 +1,22 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'invoke_request.dart';
+
+// **************************************************************************
+// JsonSerializableGenerator
+// **************************************************************************
+
+InvokeRequest _$InvokeRequestFromJson(Map<String, dynamic> json) =>
+    InvokeRequest(
+      method: json['method'] as String? ?? '',
+      params: (json['params'] as List<dynamic>?)
+              ?.map((e) => e as String)
+              .toList() ??
+          const [],
+    );
+
+Map<String, dynamic> _$InvokeRequestToJson(InvokeRequest instance) =>
+    <String, dynamic>{
+      'method': instance.method,
+      'params': instance.params,
+    };

ui/flutter/lib/api/native/model/start_config.dart

@@ -0,0 +1,19 @@
+import 'package:json_annotation/json_annotation.dart';
+
+part 'start_config.g.dart';
+
+@JsonSerializable()
+class StartConfig {
+  String storage;
+  String storageDir;
+
+  StartConfig({
+    this.storage = '',
+    this.storageDir = '',
+  });
+
+  factory StartConfig.fromJson(Map<String, dynamic> json) =>
+      _$StartConfigFromJson(json);
+
+  Map<String, dynamic> toJson() => _$StartConfigToJson(this);
+}

ui/flutter/lib/api/native/model/start_config.g.dart

@@ -0,0 +1,18 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'start_config.dart';
+
+// **************************************************************************
+// JsonSerializableGenerator
+// **************************************************************************
+
+StartConfig _$StartConfigFromJson(Map<String, dynamic> json) => StartConfig(
+      storage: json['storage'] as String? ?? '',
+      storageDir: json['storageDir'] as String? ?? '',
+    );
+
+Map<String, dynamic> _$StartConfigToJson(StartConfig instance) =>
+    <String, dynamic>{
+      'storage': instance.storage,
+      'storageDir': instance.storageDir,
+    };