Add fp8 support for SD/Update notebook paths

[Victor49152]

What does this PR do ?

Add FP8 support for SD training.

Collection: [multimodal/text_to_image/statble_diffusion]

Changelog

• Add config argument - use_te_fp8 to switch between fp16 and fp8 training
• Add transformer engine fp8 layers to Stable diffusion Unet
• Update a few legacy paths in notebook tutorial

Usage

unet_config:
    use_te_fp8=True

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• [x ] New Feature
• [ ] Bugfix
• [ ] Documentation

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Additional Information

• Related to # (issue)