调整 message_util 的发送text方法名，方便替换wcf.send_text。加入了虚拟群组管理功能；

plugins/beautyleg/main.py

@@ -110,8 +110,8 @@ class BeautyLegPlugin(MessagePluginInterface):
             # 获取随机图片
             random_file_path = self._get_random_file_from_dir(self.image_folder)
             if not random_file_path:
-                self.message_util.send_text_msg(f"\n❌未找到美腿图片资源",
-                                                (roomid if roomid else sender), sender)
+                self.message_util.send_text(f"\n❌未找到美腿图片资源",
+                                            (roomid if roomid else sender), sender)
                 return True, "未找到图片资源"
 
             # 发送图片