Deoldify Vapoursynth filter

[Dan64]

The correct definition is the following

0 = HAVC same as video  // clipRef=HAVC, ScFrameDir = None
1 = HAVC + RF same as video  // clipRef=HAVC, ScFrameDir => dir path
2 = HAVC + RF different from video  // clipRef=HAVC, ScFrameDir => dir path
3 = external RF same as video  // clipRef = None, ScFrameDir => dir path
4 = external RF different from video  // clipRef = None, ScFrameDir => dir path
5 = external ClipRef same as video  // clipRef=VideoClip, ScFrameDir => file path
6 = external ClipRef different from video  // clipRef=VideoClip, ScFrameDir => file path

The term "same as video" imply that the external frame provided (from file or clip) is equal to the frame to be colored with the only exception of colors.

Since the custom section was removed, I added more ColorModel

'Video+Artistic'
'Stable+Artistic'      [new]
'Video+ModelScope'
'Stable+ModelScope'    [new]
'Artistic+Modelscope'  [new]
'Video+Siggraph17'
'Video+ECCV16'
'DeOldify(Video)'
'DeOldify(Stable)'     [new]
'DeOldify(Artistic)'   [new]
'DDColor(Artistic)'
'DDColor(ModelScope)'
'Zhang(Siggraph17)'
'Zhang(ECCV16)'

Added new RC7 with the new color models.

Dan