Added GA Tracking for SUGCON Sites

[robearlam]

Added GA Tracking for the SUGCON Sites, powered by env var.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• I have read the Contributing guide.
• My code/comments/docs fully adhere to the Code of Conduct.
• My change is a code change.
• My change is a documentation change and there are NO other updates required.

[Copilot]

Pull Request Overview

This PR adds Google Analytics tracking functionality to the SUGCON 2024 site using Next.js third-party integration. The implementation is controlled by an environment variable to enable flexible configuration across different environments.

• Integrates Google Analytics using the @next/third-parties/google package
• Conditionally renders Google Analytics based on the NEXT_PUBLIC_GTAG environment variable
• Updates package dependencies to include the required third-party integration package

Reviewed Changes

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

File	Description
headapps/Sugcon2024/src/Layout.tsx	Adds Google Analytics component with conditional rendering based on environment variable
headapps/Sugcon2024/package.json	Adds @next/third-parties dependency for Google Analytics integration

Files not reviewed (1)

• headapps/Sugcon2024/package-lock.json: Language not supported

Comments suppressed due to low confidence (3)