dsh-port-manager: DSH Sidebar Port Management

`dsh-port-manager` is a DSH ecosystem client plugin for managing local ports. It is integrated into the right sidebar, providing a visual port list, process information, and container associations. It supports search, sorting, and automatic refresh, with convenient actions such as opening, copying, and terminating processes. The plugin is dependency-free, maintained by wyzh0117, and supports macOS and Linux. Restart `dsh web` to take effect.