Adds a new `@validate_id` decorator to validate `chat_id` and `user_id` parameters in `main.py`.
This decorator ensures that all IDs passed to functions are in a valid format before making RPC calls to the Telegram API. It handles:
- Integer IDs (positive and negative)
- String representations of integer IDs
- Usernames (e.g., "@username")
- Lists of IDs
Key changes:
- Created a `validate_id` decorator in `main.py`.
- Applied the decorator to all functions that accept `chat_id`, `user_id`, or similar parameters.
- Updated the central `log_and_format_error` function to handle custom validation error messages and a specific `VALIDATION-001` error code for logging.
- Added a new test suite (`test_validation.py`) with comprehensive tests for the decorator.
- Updated `README.md` and `session_string_generator.py` with documentation about the new validation.
- Added support for string session authentication in main.py.
- Introduced new tools for searching contacts and retrieving message context.
- Updated README.md with detailed usage examples and security considerations.
- Modified pyproject.toml for versioning and dependency updates.
- Expanded .gitignore to include Telegram session files.
