GHA: add the ability to update the module map

[compnerd]

Introduce a new option to update the Windows SDK modularization to the latest version in Swift.

[Steelskin]

You may want to add the token to this URL like this:

-H "Authorization: Bearer ${{ github.token }}" `

[compnerd]

I explicitly removed it (given the suggestion from CoPilot). It risks exposing the token and is unnecessary as per CoPilot since it is a public repo.

[Copilot]

Pull Request Overview

This PR introduces a new option to update Windows SDK modularization definitions to the latest versions from the Swift and LLVM repositories. It adds the ability to automatically download the most recent module maps and API notes for Windows SDK components.

• Adds update-sdk-modules boolean input parameter for Windows-only SDK module updates
• Implements PowerShell script to download latest module definitions from GitHub repositories
• Includes test workflow to verify the new functionality works correctly

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 3 comments.

File	Description
action.yml	Adds new input parameter and PowerShell step to download latest SDK module definitions
README.md	Documents the new update-sdk-modules parameter and reorganizes parameter sections
.github/workflows/test-install.yml	Adds test job to verify SDK module update functionality

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[Copilot]

Using curl without SSL certificate verification or error handling for HTTPS downloads poses security risks. Consider adding SSL verification and proper error handling for network failures.

Suggested change

	curl.exe -so "$($_.Value.Destination)" $_.Value.URL
	curl.exe --fail --show-error --retry 3 --retry-delay 5 -so "$($_.Value.Destination)" $_.Value.URL