Readme fix, add workflow for Stable Diffusion 3.0 (Save VAE + Create)

[yusing]

1. Save vae workflow

2. Create SD3 (TensorRT) workflow

3. Create SD3 (PyTorch) workflow

4. ReadMe indent, formatting fix Check my fork

[geroldmeisinger]

missing: how to create the tensorrt engine

[FizzleDorf]

@geroldmeisinger I put together an engine build workflow here. It contains both static and dynamic methods simply plug the checkpoint loader into either. Settings are for the original workflow provided in the first PR reply.
TRT_SD3_build.json

[Demuzx]

@geroldmeisinger I put together an engine build workflow here. It contains both static and dynamic methods simply plug the checkpoint loader into either. Settings are for the original workflow provided in the first PR reply. TRT_SD3_build.json

You did show screenshot of worflow where you use size 1344*768px, but in DYN build worflow example you shown min width/height 1024.