fix: parameter handling and type errors in Output classes

[goktugoner23]

Fix Parameter Handling and Type Errors

Description

This PR fixes several issues related to parameter handling in the Output classes:

1. Fixed memory exhaustion caused by infinite recursion in Parameter class inheritance
2. Fixed type errors with nullable parameters
3. Improved parameter conversion between Extraction and Output namespaces

Changes

• Modified Output/Parameter.php to:

  • Change inheritance from Extraction Parameter to BaseDTO
  • Add proper property initialization
  • Handle conversion from Extraction Parameter properly
  • Fix nullable parameter handling

• Modified Output/OutputEndpointData.php to:

  • Fix parameter conversion in constructor
  • Handle metadata properly
  • Prevent infinite recursion in nested parameters

Testing

All existing tests pass, including:

• Parameter nesting tests
• Output endpoint data tests
• Extractor tests

Related Issues

Fixes #[issue_number] - Memory exhaustion in parameter handling
Fixes #[issue_number] - Type errors with nullable parameters

Backwards Compatibility

These changes maintain full backwards compatibility with existing API and functionality.