feat: Export logs to zip for debugging

Description

This merge request adds a new "Export Diagnostics" feature to the GitLab VS Code extension. When users encounter issues with the extension, they can now use a new command to automatically collect and package diagnostic information, extension logs, and language server logs into a ZIP file for troubleshooting purposes. The feature includes privacy protection by automatically removing sensitive data like tokens and file paths before export. Users can access this through the VS Code command palette, choose where to save the file, and see progress updates during the export process. This makes it much easier for users to gather the technical information needed when reporting bugs or seeking support, without having to manually collect logs and configuration details themselves.

Related Issues

Resolves: Provide a way to package all logs into a zip fi... (#1616 - closed)

How has this been tested?

• If src/browser or src/common has been modified, please consider interoperability with the Web IDE. See Running the Extension in WebIDE.
• Consider an end-to-end test for significant new features that aren't covered by integration tests.

Screenshots (if appropriate)

What CHANGELOG entry will this MR create?

• fix: Bug fix fixes - a user-facing issue in production - included in changelog
• feature: New feature - a user-facing change which adds functionality - included in changelog
• BREAKING CHANGE: (fix or feature that would cause existing functionality to change) - should bump major version, mentioned in the changelog
• None - other non-user-facing changes