dsh-plugin-custom-profile: Customize your nickname and avatar on the local DSH sidebar

`dsh-plugin-custom-profile` is a DSH client plugin maintained by JonyFang, categorized as "趣味换装" (Fun Outfit Change), with the current version 0.2.2-rc.1 and an MIT license. It replaces the nickname and avatar in the account row at the bottom left of the sidebar with local values saved per device, without modifying the account or uploading data, making it suitable for demonstrations, screen recordings, and distinguishing machines when multiple users share an account. Features include setting nickname and avatar in Settings -> Profile, supporting PNG, JPG, WebP, GIF, AVIF, single image 10MB, cropped to 128x128 WebP (fallback to PNG on failure), nickname max 32 characters, leaving blank inherits the account name, Reset reverts changes, Cancel discards. Installation can be performed via Settings -> Plugins -> Install -> Local directory, or via the command line `dsh plugin --profile desktop add /absolute/path/to/dsh-plugin-custom-profile`; it can also be installed by manually symlinking the directory and inserting the ID into `cordis.patch.yml`. The plugin runs with the privileges of the current dsh process; users should read the source code and confirm the license before installation. It may conflict with another plugin drawing the same row, and it will stop rendering if the client structure changes.