dsh-plugin-artifacts: Filter the truly delivered artifacts from the DSH workspace

The DSH client plugin maintained by zmengle provides a sidebar entry and a dedicated page titled "My Products". It categorizes workspace files into four types: Products, Processes, Memories, and Materials. By default, it only displays Products to prevent test scripts and screenshots from overwhelming the list. The plugin supports grid and list views, 12 file type categories, filtering by type and role, sorting by creation and modification time and grouping by year-month, image preview, rename, move, trash, zip archiving, organize mode, and search syntax. It supports a maximum of 8 workspace root directories. Cloud features are limited to optional manual COS uploads and scheduled resending of modified files; Processes and Materials are never uploaded. It is intended for users who need to quickly locate deliverables within DSH session files. Users should check the source code and license before installation.