dsh-minimax-multimodal: Providing MiniMax Multimodal Capabilities for DeepSeek Harness (DSH)

The `dsh-minimax-multimodal` plugin is designed for DeepSeek Harness (DSH) to integrate MiniMax's multimodal capabilities—image understanding, generation, speech synthesis, and transcription—into DSH workflows. It provides multiple tools supporting text-to-image generation, speech synthesis, and audio transcription, with generated content automatically registered as deliverables. Installation requires adding the local directory via the CLI and configuring the `MINIMAX_CN_API_KEY`. When using it, note the file size limits and environment dependencies.