Complete the 4251-line docking document for IM contact us interface, including function description, interface definition, client rendering rules, local debugging example, operation configuration steps and reference implementation
1. 新增DictionaryItem字典配置结构体 2. 添加字典配置缓存及失效逻辑 3. 实现联系我们接口的业务逻辑和测试用例 4. 注册联系我们API路由 5. 集成字典配置到admin内部客户端 6. 处理字典配置更新的kafka事件