dsh-bg-carousel: Automatically carousel images and videos in the DSH interface background.

# Introduction The interface background of DSH is fixed by default. If you want to place your own images or play a video loop in the development workbench, you usually have to manually edit the theme files and CSS, and there is no place to adjust the order, interval, or opacity afterwards. `dsh-bg-carousel` turns this into a standard plugin: simply drop media files into a directory, and the interface background will automatically rotate, with settings for the directory, order, interval, and opacity configured in the panel. The following sections introduce the positioning, core features, installation steps, and typical usage of this plugin. # What is this `dsh-bg-carousel` is a standard dsh bundle plugin maintained by Jonah-Wu23, currently at version v0.3.0, with the npm package name `@jonahwu/dsh-bg-ca`...