Hint at rights in icon of shared files/folders

I would greatly appreciate it if we could see in the icon that show the fact a folder/file is shared, if there is only view right or also modifications right.

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No files, tests, or entry points are named. Start by locating the shared file and folder icon entry point in the Nextcloud server project and determine how view-only versus modification rights are represented. Done means the interface visibly distinguishes both permission states for shared files and folders.