feat(telegram_bot): added campaign creation and updating, added help command

solution/services/telegram_bot/commands/help.py

@@ -0,0 +1,21 @@
+from aiogram import Router
+from aiogram.filters import Command
+from aiogram.fsm.context import FSMContext
+from aiogram.types import Message
+from aiogram_dialog import DialogManager
+
+help_router = Router()
+
+
+@help_router.message(Command("help"))
+async def help_command(
+    message: Message, dialog_manager: DialogManager, state: FSMContext
+) -> None:
+    response = (
+        "Commands:\n\n"
+        "/start - Start the bot and authenticate as advertiser\n"
+        "/campaigns - Manage your campaigns\n"
+        "/statistics - See your overall statistics\n"
+        "/logout - Logout of current advertiser account"
+    )
+    await message.answer(response)