Deoldify Vapoursynth filter

[Dan64]

But the exemplar methods:

0 = HAVC same as video (default)
1 = HAVC + RF same as video
2 = HAVC + RF different from video
3 = external RF same as video
4 = external RF different from video
5 = HAVC restore same as video           [new]
6 = HAVC restore different from video   [new]

Are not part of custom, I will release the new RC the list of methods extended to 7 items (0-6).

Dan