Add SurrealDB third party example (using Rust)

[Dhghomon]

Cookbook Pull Request

Description

This PR adds an example in Rust of Mistral AI embeds used to store in SurrealDB and perform semantic search.

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Type of Change

What type of PR is it?

• New Cookbook
  • Notebook File
    • Does it work on google colab?
  • Markdown File
• Cookbook Update
  • Code Refactoring
  • Bug Fix
• README.md Update

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• Other (please describe):

Cookbook Checklist:

• My code is easy to read and well structured.
• I've tagged the versions of any dependency required. (I believe is taken care of by the Cargo.toml dependencies)
• I have performed a self-review of my own code.
• I have commented my code, particularly in hard-to-understand areas.
• My changes generate no new warnings or errors.

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• My changes do not concern the cookbooks.

README.md Checklist

• I've added my cookbook to the table.

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• My changes do not concern the README file.

Additional Context

Nothing besides that it was nice how easy it was to get a free key for testing purposes.

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[Dhghomon]

Sorry to ping @sophiamyang but I see you've merged a few recent such PRs, is there a way this one could be given a look?

Thank you!