fix: add ForumTopic import to slave_message.py

Author: Ovler-Young

efb_telegram_master/slave_message.py

@@ -18,7 +18,7 @@
 import telegram.ext
 from PIL import Image
 from telegram import InputFile, ChatAction, InputMediaPhoto, InputMediaDocument, InputMediaVideo, InputMediaAnimation, \
-    InlineKeyboardMarkup, InlineKeyboardButton, ReplyMarkup, TelegramError, InputMedia
+    InlineKeyboardMarkup, InlineKeyboardButton, ReplyMarkup, TelegramError, InputMedia, ForumTopic
 
 from ehforwarderbot import Message, Status, coordinator
 from ehforwarderbot.chat import ChatNotificationState, SelfChatMember, GroupChat, PrivateChat, SystemChat, Chat