feat: add Telegram bot for manual trade commands

- Added telegram_command_bot.py with slash commands (/buySOL, /sellBTC, etc)
- Docker compose setup with DNS configuration
- Sends trades as plain text to n8n webhook (same format as TradingView)
- Improved Telegram success message formatting
- Only responds to authorized chat ID (579304651)
- Commands: /buySOL, /sellSOL, /buyBTC, /sellBTC, /buyETH, /sellETH

Dockerfile.telegram-bot

@@ -0,0 +1,12 @@
+FROM python:3.11-slim
+
+WORKDIR /app
+
+# Install dependencies
+RUN pip install --no-cache-dir python-telegram-bot==20.7 requests
+
+# Copy bot script
+COPY telegram_command_bot.py .
+
+# Run bot
+CMD ["python3", "telegram_command_bot.py"]