add user_hello dialog

app/bot.py

@@ -0,0 +1,24 @@
+import asyncio
+
+from aiogram import Bot, Dispatcher
+from aiogram_dialog import setup_dialogs
+from bestconfig import Config
+
+from app.dialogs import dialogs_router
+from app.handlers import handlers_router
+
+cfg = Config()
+
+bot = Bot(token=cfg.get("bot_token"))
+dp = Dispatcher()
+
+
+async def main():
+    dp.include_router(handlers_router)
+    dp.include_router(dialogs_router)
+    setup_dialogs(dp)
+    await dp.start_polling(bot)
+
+
+if __name__ == "__main__":
+    asyncio.run(main())