add button for importing server config

src/lang/cn.rs

@@ -29,6 +29,10 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Enable TCP Tunneling", "允许建立TCP隧道"),
         ("IP Whitelisting", "IP白名单"),
         ("ID/Relay Server", "ID/中继服务器"),
+        ("Import Server Conf", "导入服务器配置"),
+        ("Import server configuration successfully", "导入服务器配置信息成功"),
+        ("Invalid server configuration", "无效服务器配置，请修改后重新拷贝配置信息到剪贴板后点击此按钮"),
+        ("Clipboard is empty", "拷贝配置信息到剪贴板后点击此按钮，可以自动导入配置"),
         ("Stop service", "停止服务"),
         ("Change ID", "改变ID"),
         ("Website", "网站"),