feat: FxTwitter handler

- reply with modified tweet link
- edit tweet link only message
    - by bot repeat modified link
    - then delete original user message

handlers/tweet.py

@@ -0,0 +1,30 @@
+from urlextract import URLExtract
+from telebot import TeleBot
+from telebot.types import Message
+
+from . import *
+
+
+def tweet_handler(message: Message, bot: TeleBot):
+    """tweet: /t <twitter/x web link>"""
+    who = "tweet"
+
+    extractor = URLExtract()
+    links = extractor.find_urls(message.text)
+
+    only_links = len("".join(links)) == len(message.text.strip())
+    if links:
+        reply_id = bot_reply_first(message, who, bot)
+        processed_links = [
+            link.replace("twitter.com", "fxtwitter.com").replace("x.com", "fixupx.com")
+            for link in links
+        ]
+        bot_reply_markdown(reply_id, who, "\n".join(processed_links), bot)
+
+        if only_links:
+            bot.delete_message(message.chat.id, message.message_id)
+
+
+def register(bot: TeleBot) -> None:
+    bot.register_message_handler(tweet_handler, commands=["t"], pass_bot=True)
+    bot.register_message_handler(tweet_handler, regexp="^t:", pass_bot=True)