[Feature Request]: Stable Diffusion 3 Medium Support

### Is there an existing issue for this?

- [X] I have searched the existing issues and checked the recent builds/commits

### What would your feature do ?

This proposed Feature request would add Stable Diffusion 3 Medium Support:

https://huggingface.co/stabilityai/stable-diffusion-3-medium

### Proposed workflow

1. Go to https://huggingface.co/stabilityai/stable-diffusion-3-medium Gain access and downloaded model
2. Press Stable Diffusion Checkpoint in forge and load the model
3. Enjoy generating images

### Additional information

_No response_

No files, tests, or code entry points are named. Start by reviewing the Stable Diffusion Checkpoint loading workflow and the linked Stable Diffusion 3 Medium model requirements; done means the model can be downloaded, loaded through Forge, and used to generate images.

Written by the indexing model from the issue text.