Add the support to have multiple sliders when logging images.

[leopold-franz]

Please describe the problem that you’re facing and the enhancements that you’d like to see. Feel free to include screenshots or code samples. Currently when you plot image predictions you can only use the slider "steps" to loop through time.

It would be great if we could define additional sliders, for example for output channels and the 3rd image axis (im running a segmentation model on 3D images). Therefore id like to have two additional sliders under the "steps" slider to easily look at the output of other channels and the the output of other slices of the z-axis.

[qihach64]

Thank you for the feature suggestion! While it's not currently in our immediate plans, we will keep monitoring the demand for this feature.