[FEATURE REQUEST] RealESRGAN can also resize only 2x

[AnaTool]

an option to choose upscaling x2 with RealESRGAN would be nice.

python inference_realesrgan.py -n RealESRGAN_x4plus -i infile -o outfile [options]...
-s, --outscale The final upsampling scale of the image. Default: 4

https://github.com/xinntao/Real-ESRGAN

[AnaTool]

That is a great work, but only in colab not local.Huge options, perhaps you got ideas for your web-gui.

https://colab.research.google.com/drive/1jUwJ0owjigpG-9m6AI_wEStwimisUE17?usp=sharing