updates to shaders ravu-zoom

[Xathros1]

source: https://github.com/bjin/mpv-prescalers/tree/master/vulkan/compute

[Tsubajashi]

Fair enough, Compute Shaders were something i wanted to avoid for a while, but people should have their gpu drivers checked up anyway! Thank you!

[Xathros1]

you were actually already using the compute shaders in the ravu-zoom-r3-rgb.hook but not in chroma,. the latter isn't used by default in the current mpv.conf anyway.

[Tsubajashi]

Oh, i guess then i overlooked it haha