[FR] Allow drawing on the original image and its FFT transform

[NightMachinery]

It'd be great if we could also draw on the original image and its transform, as well as drawing on the mask. Like this website:

• https://www.ejectamenta.com/Fourifier-fullscreen/

This allows one to draw shapes and see their transforms.

[monman53]

@NightMachinery Sorry for my late response and thank you for your nice request! I'll add this feature at next major update (not decided when but I will do in the near future).