dsh-tool-eyes: Add local vision tools for DeepSeek Harness

`dsh-tool-eyes` is a local visual plugin for DeepSeek Harness (DSH), designed to provide screen reading and image description capabilities for DSH agents in Windows environments. Licensed under the MIT license, this plugin provides two core tools: `screen` and `ocr`. The `screen` tool describes screen captures or specified images by invoking local OpenAI-compatible vision endpoints, supporting the use of local models to ensure data remains local and reduce privacy risks. The `ocr` tool utilizes the Windows built-in OCR engine to extract text from screens or images locally and offline, character by character, without requiring GPU or cloud support. Installation requires Windows 10/11, Node.js >