[dotnet-ai] MEAI embeddings

[luisquintanilla]

Fixes #228
Part of #225

Dependencies

Merge order: This PR should be merged after #237 Plugin scaffold.

Summary

Adds the meai-embeddings skill covering IEmbeddingGenerator<string, Embedding<float>> setup, batch embedding generation, dimension selection, caching, and DI registration.

Changes

File	Description
plugins/dotnet-ai/skills/meai-embeddings/SKILL.md	IEmbeddingGenerator setup, provider configuration, batch generation, dimension selection, similarity search basics, caching
tests/dotnet-ai/meai-embeddings/eval.yaml	Eval: semantic search embedding scenario

Key Packages

• Microsoft.Extensions.AI
• Provider: OpenAI, Azure.AI.OpenAI, or OllamaSharp

Validation

• SKILL.md has valid YAML frontmatter (name, description)
• Covers IEmbeddingGenerator setup, batch generation, dimension selection
• eval.yaml has at least one scenario
• Does not duplicate content from other skills

[github-actions]

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[github-actions]

This pull request has been automatically closed because it has been open for more than 30 days with no recent activity.

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