Is your feature request related to a problem? Please describe.

Add the state-of-the-art training-free fast sampler DPM-Solver, which has analytic coefficients and can greatly accelerate stable-diffusion: https://github.com/LuChengTHU/dpm-solver

Describe the solution you'd like

Add the support for DPM-Solver.

Describe alternatives you've considered

Check this repo: https://github.com/LuChengTHU/dpm-solver

Additional context

I can help to add this feature.