Add a SetFolderIcon ItemAction plugin

Méven Carrequested to merge
work/meven/folor-icon-plugin into master

To allow to change folder icon from the context menu.

CCBUG: 467221

Inspired by frameworks/kio!1882 (merged)

And https://discuss.kde.org/t/this-week-in-plasma-inhibit-sleep-while-transferring-files-kde-blogs/34005/9?u=meven

Copie_d_écran_20250511_162529

Copie_d_écran_20250511_162554

Too bad QMenu doesn't allow to add Widgets into it to have an horizontal list of buttons for instance. Or multiple rows :/

Notes: We would need to add more data to .directory files to add emblems. Better would be to store those to xattr as for view properties.

Edited by Méven Car

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