dsh-rhine-theme: RHINE LAB Analysis Workbench Theme

The `dsh-rhine-theme` plugin uses a configuration file to enter the profile bundle layer, declare client-side dependencies, and register the `rhine-lab-light` theme, mounting stylesheets and brand slots to achieve customized visual styling. It can be installed via npm, GitHub, or a local path; after installation, restart the web profile for the changes to take effect. The plugin uses `priority: -1` to override official brand slots, and any source code modifications require synchronizing the updates to `node_modules`.