Add pathMappings option to debugger

[jborean93]

PR Summary

PR to add the options added in the PR PowerShell/PowerShellEditorServices#2251.

PR Checklist

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Please mark anything not applicable to this PR NA.

• PR has a meaningful title
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[JustinGrote]

Moving to ready per @jborean93 discord comment.

[Copilot]

Pull Request Overview

This PR adds a new pathMappings configuration option to PowerShell debug configurations to support debugging remote PowerShell host processes. The feature enables mapping between local and remote file paths during debugging sessions.

• Adds pathMappings array property to both PowerShell launch and attach debug configurations
• Each path mapping consists of localRoot and remoteRoot properties for file path translation
• Provides detailed descriptions for the new configuration options