Add copilot setup workflow.

[MichaelRFairhurst]

No description provided.

[Copilot]

Pull Request Overview

This PR adds a GitHub Actions workflow to set up Copilot environment steps. The workflow is designed to validate and prepare the CodeQL environment for Copilot functionality.

• Adds automated workflow that runs on manual dispatch and when related workflow files change
• Configures specific AI models for Copilot verification (GPT-4.1, O1 models)
• Sets up CodeQL installation and pack management steps

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_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}

[Copilot]

Pull Request Overview

Copilot reviewed 1 out of 1 changed files in this pull request and generated no new comments.

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_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}