Refactor MapperService to reduce class complexity

[coderabbitai]

The MapperService class in zmscitizenapi/src/Zmscitizenapi/Services/Core/MapperService.php has exceeded the complexity threshold (101 vs 100).

Current State

• The class handles mapping logic for multiple entity types
• Current complexity: 101 (threshold: 100)
• Multiple TODO comments already suggest extracting mapping logic into specialized mapper classes

Proposed Solution

Extract mapping logic into specialized mapper classes for each entity type to:

• Reduce overall class complexity
• Improve maintainability
• Follow Single Responsibility Principle

References

• PR Discussion:
• File: zmscitizenapi/src/Zmscitizenapi/Services/Core/MapperService.php