dsh-mobile-control: DSH Plugin for driving iOS Simulator with WDA

`dsh-mobile-control` is a DeepSeek Harness (DSH) plugin designed to drive iOS simulators via WebDriverAgent (WDA) to achieve automated control of mobile devices. This plugin does not rely on macOS accessibility features or idb, but instead leverages WDA's HTTP service to provide features such as screenshots, UI element discovery, clicking, URL opening, accessibility tree export, and privacy pre-authorization. Upon installation, it registers eight `mobile_*` tools with the agent and supports natural language invocation. Before use, ensure the environment meets Node >= 20.11 and specific dependencies, and install it via command from GitHub. Core operations include starting it using the `wda-up.sh` script.