fix(bindings): Python out parameter handling and improve C# wrapper visibility

[gangatp]

C# Binding Fix:

• Add 'public' modifier to Wrapper class in buildbindingcsharp.go
• Fixes accessibility issue where Wrapper class was internal instead of public
• Aligns C# bindings with other languages that properly expose wrapper classes

Python Binding Enhancement:

• Refactor out parameter handling in buildbindingpython.go
• Separate 'out' and 'return' parameter processing logic
• Add optional input parameters for out parameters with default None values
• Improve backwards compatibility by maintaining out parameters in return values

[Copilot]

Pull Request Overview

This PR fixes binding issues for both C# and Python in the Automatic Component Toolkit (ACT). The changes improve C# wrapper class visibility and enhance Python out parameter handling for better backwards compatibility.

• Adds 'public' modifier to C# Wrapper class to fix accessibility issues
• Refactors Python out parameter handling to support optional input parameters with default None values
• Maintains backward compatibility in Python bindings while improving parameter processing

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[spywo]

LGTM