Add two new ControlNet models for SDXL

[lbeltrame]

Description

This PR adds two new ControlNet models made by HF user xinsir:

• New OpenPose model
• New Canny model

Both outperform the standard CN models and they also affect generation much less. As a plus, the OpenPose model is half the size of the one used by SD.Next.

Notes

The models are on HF, so I just added them to the default dictionary.

Environment and Testing

Tested with 7th Anime XL A model, a variety of poses and drawings.