Add getter methods of the python exception class

[spywo]

The code and message should be able to return. It keeps consistent with the API of C++. The naming conversion is also followed with python PEP 8.

[spywo]

For example, C++

try {}
catch (const AdProjectionSystem::EAdProjectionSystemException& e) {
    // Handle error with code and message
    auto errorCode = e.getErrorCode();
    auto errorMessage = e.getErrorMessage();
    
    if (errorCode == ADPROJECTIONSYSTEM_ERROR_CRS_NOT_FOUND) {
        // Provide localized message or fallback behavior
    }
}

The python should also have the similiar way:

try:
except AdProjectionSystem.EAdProjectionSystemException as e:
    error_code = e.GetErrorCode()
    error_message = e.GetErrorMessage()
    
    # Use error code for localization or display message directly
    handle_error(error_code, error_message)

[spywo]

The other language also has the issue, like Java.

[Copilot]

Pull Request Overview

This PR adds getter methods and properties to the Python exception class to provide consistent access to error information. The implementation aligns with C++ API patterns and follows Python PEP 8 naming conventions.

Key changes:

• Added getter methods (get_error_code, get_error_message, get_error_name, get_error_description)
• Added corresponding properties (error_code, error_message, error_name, error_description)
• Implemented logic to map error codes to names and descriptions

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[Copilot]

The properties error_name and error_description add unnecessary indirection by calling getter methods that contain the actual logic. Consider implementing the logic directly in the properties to eliminate the redundant method calls and simplify the code structure.

Suggested change

	w.Writeln(" return self.get_error_name()")
	w.Writeln(" ")
	w.Writeln(" @property")
	w.Writeln(" def error_description(self):")
	w.Writeln(" \"\"\"Property to access error description\"\"\"")
	w.Writeln(" return self.get_error_description()")
	w.Writeln(" # Inlined logic from get_error_name")
	w.Writeln(" return type(self).__name__")
	w.Writeln(" ")
	w.Writeln(" @property")
	w.Writeln(" def error_description(self):")
	w.Writeln(" \"\"\"Property to access error description\"\"\"")
	w.Writeln(" # Inlined logic from get_error_description")
	w.Writeln(" return str(self)")