[Feat]: Select the non-EMA checkpoint for Stable Cascade

[sjuxax]

Describe your use-case.

Trying to train a Stable Cascade LoRA and find the non-EMA samples are much better. I'm now faced with trying to create a safetensors file that uses the EMA weights. At https://github.com/Nerogar/OneTrainer/issues/116#issuecomment-1879358111, @Nerogar mentioned this was possible with some manual manipulation and the Model Convert tool. Instructions on how to do that would be nice, but the Model Convert dropdown doesn't have Stable Cascade as an option, so adding it may be a pre-requisite.

What would you like to see as a solution?

Ideally, make a simple-to-copy no-ema safetensors file alongside the ema one.

Probably also requires Model Convert for Cascade.

Have you considered alternatives? List them here.

N/A