Ability to apply LUT on output save

[LudvikKoutny]

As the title says, I would like ability to save image with LUT baked in. I know that there's LUT explorer script, but it has not very nice workflow and it doesn't seem to work with denoiser (If I use LUT explorer on image that's supposed to be denoised, VFB just flashes during denoising but actual denoised image does not show).

So just a simple checkbox in LUT rollout inside VFB to bake the LUT into output image.

Thanks!