- Deleted the `config.py` file responsible for managing bot configuration via environment variables and `.env` files, as it is no longer needed.
- Removed the `test_settings.ini` file used for testing, which contained mock configuration data.
- Cleaned up the project structure by eliminating unused files to enhance maintainability.
- Added voice message handling capabilities, including saving and deleting audio messages via callback queries.
- Refactored audio record management in the database to remove unnecessary fields and streamline operations.
- Introduced new keyboard options for voice interactions in the bot.
- Updated `.gitignore` to include voice user files for better project organization.
- Removed obsolete voice bot handler files to simplify the codebase.
