Deoldify Vapoursynth filter

[Dan64]

I think that is better (if not too complex), substitute the group box label "DDColor", with a ComboBox where is possible select "DDColor" or "Colorizer".

When is selected DDColor will be possible to select the models: "ModelScope", "Artistic". When is selected "Colorizer" the models: "Siggraph 17", "ECC v16".

But these changes must be applied only to the GUI. 
The call to HAVC_ddeoldify and the parameters must no change respect to the implementation in Hybrid 2025.01.03.1.

Thanks,
Dan