Feature Request: Option to only smooth on downscale

[absolutelynothinghere]

Hello, I'm a big fan of Viewnior and use it daily. I have a feature request: add an option in settings to smooth images only on downscale (i.e. when zooming out)... For example if I have a large photo that Viewnior downscales to fit my window I want it to be smoothed, but if I zoom in on the photo to look at individual pixels I don't want smoothing.

To keep the old behavior for other users you can split the smoothing option to have three choices: upscale only, downscale only, or both.

Thank you.