Generate valid C# for copy ctors with extra args

Signed-off-by: Dimitar Dobrev <dpldobrev@protonmail.com>

src/Generator/Generators/CSharp/CSharpSources.cs

@@ -2501,7 +2501,11 @@ internal static{(@new ? " new" : string.Empty)} {printedClass} __GetInstance({Ty
                     // Allocate memory for a new native object and call the ctor.
                     WriteLine($"var ret = Marshal.AllocHGlobal(sizeof({@internal}));");
                     var printed = TypePrinter.PrintNative(@class);
-                    WriteLine($"{printed}.{GetFunctionNativeIdentifier(copyCtorMethod)}(ret, new {TypePrinter.IntPtrType}(&native));",
+                    string defaultValue = string.Empty;
+                    if (copyCtorMethod.Parameters.Count > 1)
+                        defaultValue = $", {ExpressionPrinter.VisitParameter(copyCtorMethod.Parameters.Last())}";
+                    WriteLine($@"{printed}.{GetFunctionNativeIdentifier(copyCtorMethod)}(ret, new {
+                        TypePrinter.IntPtrType}(&native){defaultValue});",
                         printed, GetFunctionNativeIdentifier(copyCtorMethod));
                     WriteLine("return ret.ToPointer();");
                 }

tests/Common/Common.cpp

@@ -465,6 +465,11 @@ ClassA::ClassA(int value)
     Value = value;
 }
 
+ClassA::ClassA(const ClassA& other, bool param)
+{
+    Value = other.Value;
+}
+
 ClassB::ClassB(const ClassA& x)
 {
     Value = x.Value;

tests/Common/Common.h

@@ -713,6 +713,7 @@ class DLL_API ClassA
 {
 public:
     ClassA(int value);
+    ClassA(const ClassA& other, bool param = true);
     int Value;
 };
 class DLL_API ClassB