chore(model gallery): add starrysky-12b-i1

[mudler]

Description

This pull request adds a new entry to the gallery/index.yaml file, introducing a Mistral-based model named "StarrySky-12B-i1" with details about its sources, description, and associated files.

Additions to the gallery/index.yaml file:

• New Model Entry: Added a new model, "StarrySky-12B-i1," which is a Mistral model with ChatML tokens integrated into the tokenizer. The entry includes:
  • A name, URL, and icon for the model.
  • A description outlining the merge of two models: Elizezen/Himeyuri-v0.1-12B and inflatebot/MN-12B-Mag-Mell-R1.
  • Overrides for model parameters and file details, including a file (StarrySky-12B.i1-Q4_K_M.gguf) with its SHA256 checksum and URI.

Notes for Reviewers

Signed commits

• Yes, I signed my commits.

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