General: I changed KWin scripts to use Plasma Packages and install services. This allows us to ship scripts pre-installed but not enabled. This is a first such script.

This script allows to have video fullscreen windows span all attached screens creating a video wall.
    
This replaces the removed functionality that you could disable xinerama support inside KWin for fullscreen windows.

Currently vlc, smplayer and dragon player are recognized as video players.