I want the Go webp package to support encoding grayscale Go images to WebP through these public functions…

I want the Go webp package to support encoding grayscale Go images to WebP through these public functions…: a task in MiMo-V2.6-RL-harbor-code: MiMo-V2.6-RL Code (Harbor) (Harbor dataset). For a 1x10 image.Gray gradient encoded with ConfigPreset(PresetDefault, 100) , EncodeGray should return nil …