Added the security.md

[Dipanita45]

🔗 Related Issue

• Closes [DOCS] Create security.md file #637

🎯 Rationale

📝 Summary of Changes

🔧 Technical Details

✅ Testing

Test Coverage

• Unit tests added/updated
• Integration tests added/updated
• Manual testing completed
• All existing tests pass

Test Details

📚 Documentation

• Code comments added/updated
• README updated (if needed)
• API documentation updated (if needed)
• Migration guide provided (for breaking changes)

🔄 Breaking Changes

• This PR contains breaking changes
• Migration guide provided
• Version updated appropriately

🎨 User-Facing Changes

Frontend Changes

• UI components modified
• New user interactions added
• Styling/theme changes

Backend/API Changes

• New endpoints added
• Existing endpoints modified
• Response format changes

📋 Checklist

Code Quality

• Code follows project style guidelines
• Self-review completed
• No console.log or debug statements left
• Error handling implemented appropriately

Review Readiness

• PR title is descriptive and follows conventions
• PR description is complete and accurate
• Commits are atomic and well-documented
• Branch is up to date with target branch

Security & Performance

• No sensitive information exposed
• Performance impact considered
• Security implications reviewed

🚀 Deployment Notes

📸 Screenshots/Demo

🙏 Reviewer Notes

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[Dipanita45]

Please merge the pr and add labels

[eccentriccoder01]

Great Work @Dipanita45! Feel free to work on more issues or create new ones. Thanks for improving TalkHeal💙