Create authenticated npmrc in another job

[chidozieononiwu]

This pull request updates the VSIX release pipeline to improve how the @vscode/vsce tool is installed during deployment. The main change is the introduction of a new job that creates and publishes an authenticated .npmrc file, allowing deployment jobs to install @vscode/vsce from an internal feed without needing direct service connection access. This enhances security and simplifies the deployment process.

Pipeline authentication and artifact handling:

• Added a new job, AuthenticateNpmrc, to create an authenticated .npmrc file and publish it as a pipeline artifact for use by deployment jobs.
• Updated deployment jobs to depend on the new AuthenticateNpmrc job and to download the vsix_npmrc artifact for authenticated npm installs. [1] [2]

VSCE installation update:

• Modified the VSIX deployment script to install @vscode/vsce using the authenticated .npmrc, ensuring installation from the internal feed.

mcp - Template.Mcp.Server

[Copilot]

Pull request overview

This PR updates the VSIX release pipeline to install @vscode/vsce using an authenticated .npmrc produced in a separate job, so the production deployment jobs don’t need direct feed/service-connection access.

Changes:

• Added an AuthenticateNpmrc job to create an authenticated .npmrc and publish it as a pipeline artifact.
• Updated VSIX deployment jobs to depend on AuthenticateNpmrc and download the published npmrc artifact.
• Updated the deployment script step to install @vscode/vsce using npm --userconfig pointing at the downloaded .npmrc.

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