chore(model gallery): add delta-vector_austral-24b-winton

[mudler]

Description

This pull request adds a new entry to the gallery/index.yaml file, introducing details about the Delta-Vector_Austral-24B-Winton model. The change includes metadata, descriptions, and file references for this model.

Addition of a new model entry:

• Model metadata: Added the Delta-Vector_Austral-24B-Winton model with its name, icon, and associated URLs.
• Model description: Included a detailed description of the model's purpose and history, highlighting its finetuning process and intended use as a generalist Roleplay/Adventure model.
• File references: Provided file details such as the filename, SHA256 hash, and URI for the model's associated GGUF file.

Notes for Reviewers

Signed commits

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