feat: add event watcher

backend/src/userbot/handlers/messages.py

@@ -13,6 +13,7 @@ async def on_message(client: PyroClient, message: Message) -> None:
     if ctx is None or message.empty or message.chat is None or message.date is None:
         return
     meta = meta_from_chat(message.chat, ctx.contacts.ids)
+    await ctx.watches.on_text(meta.chat_id, message.id, message.text or message.caption)
     toggles = ctx.resolve(meta)
     if not toggles.messages:
         return