render: image: have option to diff images with a slider instead of side by side

[dberenbaum]

See how tensorboard shows images over multiple steps for an example: https://stackoverflow.com/questions/43763858/change-images-slider-step-in-tensorboard.

It would be great to have an option to view like this instead of loading all image revisions side by side.

[daavoo]

@dberenbaum do you think we want to prioritize this or consider the image slider only a feature for the VSCode / Studio UIs

[dberenbaum]

I think we can close or at least not prioritize this. WDYT?

[daavoo]

Closing as not planned