refactor(bot): modularize bot code

bot/handlers/start.py

@@ -0,0 +1,21 @@
+from aiogram import Router
+from aiogram.filters import Command
+from aiogram.types import Message
+
+from bot.filters import AdminFilter
+from bot.ui.formatters import get_asf_status_text
+from bot.ui.keyboards import main_keyboard
+
+router = Router()
+
+
+@router.message(Command("start"), AdminFilter())
+async def start_handler(message: Message) -> None:
+    try:
+        await message.delete()
+    except Exception:
+        pass
+    try:
+        await message.answer(get_asf_status_text(), reply_markup=main_keyboard())
+    except Exception as error:
+        await message.answer(f"Ошибка: {error}")