Support for rotate/transpose

[akshetpandey]

Wondering if a rotate/transpose filter is on the roadmap?

Would be nice not to have to reply on transpose_npp or moving data back to cpu to rotate.

Ref: https://ffmpeg.org/ffmpeg-filters.html#rotate https://ffmpeg.org/ffmpeg-filters.html#transpose-1 https://ffmpeg.org/ffmpeg-filters.html#transpose_005fnpp https://ffmpeg.org/ffmpeg-filters.html#transpose_005fvt https://ffmpeg.org/ffmpeg-filters.html#transpose_005fvulkan