Add Node.js Quiz Module

[sunehachoudhary]

📌 What does this PR do?

This PR adds a new Node.js quiz module to the Quiz App project.
It introduces a dedicated set of Node.js questions, integrates them into the quiz flow, and ensures they work seamlessly with the existing question rendering, scoring, and UI components. This enhancement expands the app’s content coverage, allowing users to test their Node.js knowledge alongside other topics.

Related Issue

This PR is not linked to any existing issue; it adds a new feature.

🔧 Type of Change

• Bug fix (non-breaking change)
• New feature
• Breaking change
• Documentation update

✅ How Has This Been Tested?

The Node.js quiz module was tested manually by running the Quiz App locally and verifying that all questions load correctly, scoring and navigation work as expected, and no console errors occur. Existing quiz categories were also checked to ensure they remain unaffected by the new addition.

📊 Impact / Performance

This change has no negative performance impact, as the Node.js quiz module is lightweight and only loads when selected. Overall app functionality and performance remain unchanged.

✅ Checklist

• I have followed the code style guidelines.
• I have self-reviewed my code.
• I have commented on complex parts of the code.
• I have updated or added documentation where necessary.
• All tests pass locally.
• No new warnings have been introduced.