feat: Made a command to start

main.py

@@ -11,6 +11,7 @@ from aiogram import Bot, Dispatcher, Router, types
 from aiogram.client.default import DefaultBotProperties
 from aiogram.enums import ParseMode
 from aiogram.webhook.aiohttp_server import SimpleRequestHandler, setup_application
+from aiogram.filters import CommandStart
 
 import hashlib
 
@@ -19,6 +20,19 @@ bot = Bot(token=config['telegram_token'], default=DefaultBotProperties(parse_mod
 
 router = Router()
 
+@router.message(CommandStart())
+async def start(message: types.Message):
+    get_bot = await bot.get_me()
+    await message.reply(
+        'Shirino is a telegram bot for converting fiat or cryptocurrency. '
+        'The example of use occurs via inline query:\n'
+        f'@{get_bot.username} USD RUB \n'
+        f'@{get_bot.username} 12 USD RUB \n\n'
+        '[Source Code](https://github.com/Redume/Shirino)',
+        parse_mode='markdown'
+    )
+
+
 @router.inline_query()
 async def currency(query: types.InlineQuery) -> None:
     text = query.query.lower()
@@ -87,7 +101,7 @@ async def on_startup(bot: Bot) -> None:
     await bot.set_webhook(
         f"{config['webhook']['base_url']}{config['webhook']['path']}", 
         secret_token=config['webhook']['secret_token'],
-        allowed_updates=['inline_query']
+        allowed_updates=['inline_query', 'message']
         )