Deoldify Vapoursynth filter

[Dan64]

I'm going to release the attached version.

Respect to the previous version I applied the following changes:

1) "Mode" in "Chroma Stabilization" will accept only values:"arithmetic" (default), "weighted"
2) the max frames allowed in  "Chroma Stabilization" now is 15
3) is not more necessary the plugin: "MiscFilters.dll"  (will be used the standard Vapoursynth plugin)
4) changed some default value (see the ddeoldify() function header)
5) added new post-process filter "Chroma Limiter"

The new filter "Chroma Limiter"  will force the chroma chenges in a frame to be below the chroma deviation limit (default 2%) of previous frame.

The behavior of this new filter is quite satisfactory, see the comparison: https://imgsli.com/MjQ5NTIw  

Moreover in the vsdeoldify package I exported 2 new filters extracted from ddeoldify():

#1 Chroma resize filter, derived from ddeoldify
dd_chroma_resize(clip_hires: vs.VideoNode, clip_lowres: vs.VideoNode) -> vs.VideoNode:

and

#2 Video color stabilization filter, derived from ddeoldify
dd_video_stabilizer(clip: vs.VideoNode, chroma_resize: list = [False, 32], color_smoothing: list = [False, 0.1, 0.2, 0.5, 0.8], color_stabilizer: list = [False, 5, 'arithmetic', 1, True], color_limiter: list = [False, 0.02]) -> vs.VideoNode: 

The first filter allows to transfer the chroma components from a low resolution movie to the same high resolution movie (useful to speed up filters working on the chroma components).
The second filter is including all the post-process filters developed for ddeoldify() and could be useful to restore movies colored with others applications.

It's up to you to decide if it's worth including them in Hybrid .

Dan