chore(model gallery): add planetoid_27b_v.2

[mudler]

Description

This pull request introduces a new entry to the gallery/index.yaml file, adding metadata and details for a newly merged pre-trained language model, Planetoid_27B_V.2. The update includes its description, performance characteristics, supported languages, and associated files.

Addition of a new model entry:

• Model Name and Metadata: Added a new model entry, Planetoid_27B_V.2, which is a merge of pre-trained gemma3 language models. The metadata specifies the model's purpose, including its suitability for assistant tasks, roleplay, and creative writing.
• URLs and Files: Included links to the model's hosting locations on Hugging Face, along with the associated file details (Planetoid_27B_V.2.Q4_K_M.gguf) such as its sha256 checksum and URI.
• Performance Description: Documented the model's performance, including its handling of context, response quality, creativity, and support for languages like Russian. The description also mentions potential biases and areas for improvement.

Notes for Reviewers

Signed commits

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