[Model Port] Add Llama-3-Groq-8B-Tool-Use preset

[jaytiwarihub]

Hi Keras Team,

I have successfully ported the Llama-3-Groq-8B-Tool-Use model (originally by Groq/Meta) to KerasHub. This model is currently State-of-the-Art for 8B-class tool use and agentic workflows, and I believe it would be a valuable addition to the library's llama3_presets.py.

Work Done

I have converted the weights from the original PyTorch source, handled the transpose operations, and verified the model outputs using KerasHub.

Artifacts

• Model Weights (Kaggle): https://www.kaggle.com/models/jaytiwari04/llama-3-groq-8b-tool-use/
• Validation Notebook: https://www.kaggle.com/code/jaytiwari04/llama-3-groq-tool-use-01

Next Steps

I would love to contribute this as an official preset.

Could you please review the artifacts? If everything looks good, I am happy to transfer the weights to the official Keras Kaggle account so I can open a PR to add the preset to the codebase.

Thanks!
cc: @mattdangerw @abheesht17 @sachinprasadhs @divyashreepathihalli