package/kodi-screensaver-asteroids: new package

[Thomas:
   - do not pass -DCMAKE_MODULE_PATH, no longer needed.
   - add dependency on KODI_GL, since it includes <GL/gl.h>.]

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>