chore(model gallery): add nvidia_llama-3.1-nemotron-nano-4b-v1.1

[mudler]

Description

This pull request adds a new entry to the gallery/index.yaml file for the nvidia_Llama-3.1-Nemotron-Nano-4B-v1.1 model, including its metadata, description, and associated files.

Addition of a new model entry:

• Model metadata: Added a new model named nvidia_Llama-3.1-Nemotron-Nano-4B-v1.1 with an icon, name, description, and URLs linking to its Hugging Face pages.
• Model description: Detailed the model's features, including its post-training process, reasoning capabilities, context length, and suitability for commercial use.
• Associated files: Included file metadata such as filename, SHA256 checksum, and URI for the model file.

Notes for Reviewers

Signed commits

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