[Feature] Ability to upgrade library with upscaling algorithms

[dsrtusr88]

Is your feature request related to a problem? Please describe. Would like the ability to integrate https://github.com/k4yt3x/video2x so that files can be regenerated as an upscaled output file.

Describe the solution you'd like Would like a mode to take a file (ex. 480p scene), set basic parameters (upscale to 720p/1080p/4k), set preferred algorithm (RealSR/SRMD/RealCUGAN), set quality (2x/4x/6x), and then leverage a CPU or GPU to process the output file. On output, scene compare mode to play both files at the same time with the ability to toggle sound on either and then decide which one to keep.