[Feature Request] AMD FidelityFX Super Resolution 1.0

[Xphalnos]

The implementation of FSR 1.0 could benefit shadPS4 thanks to an improvement in performance and image quality.
Unlike DLSS which is exclusive to Nvidia cards, FSR 1.0 works on all GPUs.
There could be a scrollbar in the Qt interface that allows you to adjust the sharpness of the image.

FSR 1.0 repo:
https://github.com/GPUOpen-Effects/FidelityFX-FSR

Interesting Article:
https://gpuopen.com/manuals/fidelityfx_sdk/fidelityfx_sdk-page_techniques_super-resolution-spatial/

[Foul-Tarnished]

Related to #1303
Probably would be similar work to implement bilinear/bicubic/lanczos up/down sampling