chore(model gallery): add qwen3-30b-a1.5b-high-speed

[mudler]

Description

This pull request adds a new model entry to the gallery/index.yaml file, providing details about the Qwen3-30B-A1.5B-High-Speed model. The addition includes metadata, description, and file references for the model.

Addition of a new model entry:

• Model name and metadata: Added a new model entry named qwen3-30b-a1.5b-high-speed, including its name, icon URL, and associated URLs for accessing the model files.
• Description: Provided a detailed description of the model, highlighting its finetuning process, performance improvements (e.g., speed and parameter usage), and context size capabilities.
• File references: Included the file details (filename, sha256, and uri) for the model in GGUF format.

Notes for Reviewers

Signed commits

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