Add mutated_args field to custom_op (#123129)

If provided, we:
- autogenerate an ADInplaceOrView implementation
- assume that no mutated inputs are returned as outputs. There are
  already aliasing runtime checks that check this.

Test Plan:
- new tests
Pull Request resolved: https://github.com/pytorch/pytorch/pull/123129
Approved by: https://github.com/albanD
ghstack dependencies: #123108, #123109, #123110

torch/csrc/utils/python_dispatch.cpp

@@ -730,6 +730,8 @@ void initDispatchBindings(PyObject* module) {
 
   py_context_manager_DEPRECATED<at::AutoDispatchBelowAutograd>(
       m, "_AutoDispatchBelowAutograd");
+  py_context_manager<at::AutoDispatchBelowADInplaceOrView>(
+      m, "_AutoDispatchBelowADInplaceOrView");
 
   // Prints out the name of every operator that has a kernel registered to the
   // Dispatcher under [dispatch_key]. If no arguments are specified, it'll print