Treat missing pack errors as configuration errors

[mbg]

This extends the classification of CLI errors with a case for missing pack errors, so that they get classed as configuration errors.

Merge / deployment checklist

• Confirm this change is backwards compatible with existing workflows.
• Confirm the readme has been updated if necessary.
• Confirm the changelog has been updated if necessary.

[Copilot]

Pull Request Overview

This PR adds support for treating "not found in registry" errors from the CodeQL CLI as configuration errors rather than generic failures. This enables better error handling and categorization when CodeQL packs cannot be found in registries.

• Adds a new configuration error category NotFoundInRegistry to the CLI error classification system
• Defines a regex pattern to match "not found in the registry" error messages from the CLI

Reviewed Changes

Copilot reviewed 2 out of 3 changed files in this pull request and generated no comments.

File	Description
src/cli-errors.ts	Adds NotFoundInRegistry enum value and regex pattern for CLI error classification
lib/cli-errors.js	Generated JavaScript equivalent of the TypeScript changes