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This should make it much easier to write custom nodes with kdiffusion type
samplers.

* support numeric/text ids

This was broken because of recent changes so I fixed it and moved it from
the experiments repo.

Unload models before getting weights for model patching.

Use the "lcm" sampler to sample them, you also have to use the
ModelSamplingDiscrete node to set them as lcm models to use them properly.

* added loading api json

* revert async change

* reorder

This allows changing the sampling parameters of the model (eps or vpred)
or set the model to use zsnr.

More generic clip model class that can be used on more types of text
encoders.

Don't apply weighting algorithm when weight is 1.0

Don't compute an empty token output when it's not needed.