Implement C API function PyList_Insert.

Author: fangerer

graalpython/com.oracle.graal.python.cext/src/listobject.c

@@ -94,3 +94,8 @@ UPCALL_ID(PyList_Sort);
 int PyList_Sort(PyObject *l) {
 	return UPCALL_CEXT_I(_jls_PyList_Sort, native_to_java(l));
 }
+
+UPCALL_ID(PyList_Insert);
+int PyList_Insert(PyObject *op, Py_ssize_t where, PyObject *newitem) {
+    return UPCALL_CEXT_I(_jls_PyList_Insert, native_to_java(op), where, native_to_java(newitem));
+}

graalpython/lib-graalpython/python_cext.py

@@ -386,6 +386,13 @@ def PyList_Sort(listObj):
     listObj.sort()
     return 0
 
+@may_raise(-1)
+def PyList_Insert(listObj, i, item):
+    if not isinstance(listObj, list):
+        __bad_internal_call(None, None, listObj)
+    listObj.insert(i, item)
+    return 0
+
 
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