[Feature Request] Detect upsampling rather than hardcoded "Downsampling:"

[Trucido]

In Scaling.cpp I noticed "Downsampling:" is hardcoded to the console. GeDoSaTo is also useful for upsampling too with good scaling algorithms. (some games the UI is too tiny or your graphics card just can't keep up, especially with monitors getting higher and higher in resolution)

while this is just a cosmetic issue right now, declaring upsampling in some kind of global string could provide future detections in shaders/plugins when upsampling is used instead of downsampling so they can optimize accordingly. (like upsampling optimized bicubic, or changing the order certain shaders load)