Port 2V0 UI Python bindings and app module link surface

extension/src/port/common/PortPythonPointer.h

@@ -0,0 +1,26 @@
+#pragma once
+
+#include <Python.h>
+
+// The 40250 Python API represents native handles as integers. Keep that API while allowing a
+// 64-bit pointer to survive the round trip on macOS and mobile builds.
+template <typename T>
+PyObject* Py_BuildPointer(T* pointer)
+{
+	return PyLong_FromVoidPtr(static_cast<void*>(pointer));
+}
+
+template <typename T>
+bool PyTuple_GetPointer(PyObject* args, int position, T** out)
+{
+	if (position < 0 || position >= PyTuple_Size(args))
+		return false;
+	PyObject* value = PyTuple_GetItem(args, position);
+	if (!value)
+		return false;
+	void* pointer = PyLong_AsVoidPtr(value);
+	if (PyErr_Occurred())
+		return false;
+	*out = static_cast<T*>(pointer);
+	return true;
+}