add config

lib/module/config/config_bean.dart

@@ -0,0 +1,25 @@
+import 'package:json_conversion_annotation/json_conversion_annotation.dart';
+
+@JsonConversion()
+class ConfigBean {
+
+  String? title;
+  String? value;
+
+  ConfigBean({this.title, this.value});
+
+  ConfigBean.fromJson(Map<String, dynamic> json) {
+    title = json['title'];
+    value = json['value'];
+  }
+
+  Map<String, dynamic> toJson() {
+    final Map<String, dynamic> data = new Map<String, dynamic>();
+    data['title'] = this.title;
+    data['value'] = this.value;
+    return data;
+  }
+  static ConfigBean jsonConversion(Map<String, dynamic> json) {
+    return ConfigBean.fromJson(json);
+  }
+}