Deoldify Vapoursynth filter

[Dan64]

Currently I'm using: DeSpot(), mcdegrainsharp() to remove the grain
Then I colorize the video and finally I use CAS(0.7) and eventually GLCAS.

Including DeSpot(), mcdegrainsharp()  I can skip the application of CAS/GLCAS.

I will add a degrain option in vsdeoldify in the next RC.

Thanks,
Dan