Deoldify Vapoursynth filter

[Selur]

The code is path-independent and does not explicitly use directory separators.

MiscFilter_dir: str = os.path.join(vsutils_dir, "..", "..", "..", "..", "..", "vsfilters", "MiscFilter", "MiscFilters")

It assumes, a specific structure. (and names),
Just saying, I think this is unwise, since it only works with the current structure and will break in case I ever rename or move a folder, or a non-Window setup is used.
So just from a design point of view, I would advise against this.
From my point of view, it would be better to throw an error if those filters are not available, but needed.
It's your thing, I just wanted to give my input.

Cu Selur