GitLab

Adding dpmpp_2s_ancestral as custom sampler node to enable its use with eta and s_noise when using custom sampling.

It is based on: https://arxiv.org/abs/2407.12173

Add "beta" to the list of schedulers and the BetaSamplingScheduler node.

(for eta and s_noise)

This node enables the creation of nodes to change the guider/denoiser and
the noise algorithm.

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