Port to the new wallpaper api
the root object must be a WallpaperItem the fake public api setUrl become a signal handler new actions api identical to the plasmoid one
Adds a small feature in potd: context action to open the downloaded photo of the day to save it
in hunyango, context action to trigger the random color animation that happens every now and then
needs https://invent.kde.org/frameworks/plasma-framework/-/merge_requests/824
Edited by Marco Martin