dsh-plugin-mynah: Adding Real-Time Digital Human Conversation Capabilities to DeepSeek Harness Agents

`dsh-plugin-mynah` is a plugin for DeepSeek Harness (DSH), designed to connect DSH with the Mynah real-time digital human stack and address the lack of intuitive experience in text-based interactions. It provides tools for real-time interaction (speaking, interruption, and actions), session management, and knowledge base updates, and supports driving digital humans via a Web UI or headless mode. Installation requires specifying a Mynah instance address, and the runtime environment must meet specific version and hardware requirements, enabling the agent to engage in embodied interaction.