Stage 01 - bootstrap v2 stable start

app/src/telegram/handlers/portfolio.py

@@ -0,0 +1,12 @@
+from aiogram import F, Router
+from aiogram.types import Message
+
+from src.telegram.menus import PORTFOLIO_TEXT
+
+
+router = Router(name="portfolio")
+
+
+@router.message(F.text == "💼 Портфель")
+async def open_portfolio(message: Message) -> None:
+    await message.answer(PORTFOLIO_TEXT)