Add initial project structure for Telegram bot

- Created Docker configuration files for development and production.
- Added Dockerfile for building the bot image.
- Implemented configuration loading from environment variables.
- Developed main application logic and command handlers.
- Included README with setup instructions and usage details.
- Added .gitignore and .dockerignore files to exclude unnecessary files.
- Provided example environment file (.env.example) for bot token configuration.
- Established basic error handling for the bot.

main.py

@@ -0,0 +1,24 @@
+"""Single entry point: build Application, register handlers, run polling."""
+import logging
+
+import config
+from telegram.ext import ApplicationBuilder
+
+from handlers import register_handlers
+
+logging.basicConfig(
+    format="%(asctime)s - %(name)s - %(levelname)s - %(message)s",
+    level=logging.INFO,
+)
+logger = logging.getLogger(__name__)
+
+
+def main() -> None:
+    app = ApplicationBuilder().token(config.BOT_TOKEN).build()
+    register_handlers(app)
+    logger.info("Bot starting (polling)...")
+    app.run_polling(allowed_updates=["message"])
+
+
+if __name__ == "__main__":
+    main()