Add content for chapters 3 and 4 on IT Act 2000 and Data Privacy & Pr…

[pranvxag]

Related Issue

Fixes #37
Related to #143

Description

Added chapter content for Module 3 and Module 4 of the
Cyber Laws and Ethics subject under Semester 5.

Changes made:

• Created app/sem5/cle/content/chapter3.tsx — IT Act 2000 & Amendments
• Created app/sem5/cle/content/chapter4.tsx — Data Privacy & Protection
• Registered Ch3Content and Ch4Content in app/sem5/cle/[chapter]/page.tsx

Chapter 3 covers:

• What is the IT Act 2000 and its objectives
• Key sections (43, 65, 66, 66A, 67, 72) with penalties
• The 2008 Amendment and what changed

Chapter 4 covers:

• What is personal data and sensitive personal data
• Digital privacy rights (Right to Know, Correction, Erasure, Portability)
• Key laws — GDPR and India's DPDP Act 2023
• Real-world data breach case studies (Facebook-Cambridge Analytica, AIIMS Delhi)

Type of Change

• Documentation update

Screenshots / Demo

How Has This Been Tested?

Tested locally using npm run dev in GitHub Codespaces.

Verified:

• /sem5/cle/ch3 loads correctly with full IT Act content
• /sem5/cle/ch4 loads correctly with full Data Privacy content
• Sidebar highlights the correct chapter when active
• Previous/Next navigation works correctly between chapters
• No existing pages or functionality were affected

Checklist

• My code follows the project structure and conventions
• I have tested the changes locally
• I have linked the related issue properly
• I have added screenshots where applicable
• No existing functionality was broken

AI Usage

• I have used AI tools (Claude) and I have reviewed, verified, and
  understood all generated code/content before submitting this PR

If AI tools were used, briefly explain how:

Used Claude for documentation drafting and content structuring.
All content was reviewed for factual accuracy and consistency
with the existing project style before submitting.

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