Add a ShutterMode delayed for the delayed case.
Adds X-KDE-Wayland-Interfaces=org_kde_kwin_effect-screenshot and X-KDE-Original-Executable to desktop file, so that KWin can check spectacle is authorized to take screenshots.
Adds a runtime dependency on D29407 KWin 5.19 in Wayland.
Depends on D29407
BUG: 414532
BUG: 407489