Feature Added

Add comprehensive SDK features (v0.2.0) New Features: - Vision/Image support with create_with_image() convenience method - Audio input/output support - Video content support - Web Search with create_with_web_search() convenience method - Reasoning Mode support (glm-4.7) - Extended Thinking (Gemini) support - Models API (list, retrieve) - Responses API (OpenAI format) - Messages API (Anthropic format) - Rerank API (BAAI/bge-reranker-v2-m3, Qwen models) - Helper utilities for base64 encoding Includes 81 unit tests covering all new functionality. PyPI Package: [https://pypi.org/project/apertis/](https://pypi.org/project/apertis/)