dsh-zhipu: Zhipu BigModel All-in-One Plugin

`dsh-zhipu` is the Zhipu BigModel plugin for DeepSeek Harness (DSH), providing unified web search, page reading, visual understanding, and image recognition capabilities via `ZAI_API_KEY`. The plugin relies on the Zhipu Coding Plan endpoint and allows custom tool toggles through a configuration file. Data is sent to `open.bigmodel.cn`, and search results should be cited with caution. After installation, add the package name to the profile bundle list and configure the LLM model to support image input to enable image recognition.