Add support for `torch.ops.aten.glu.default`, documented [here](https://pytorch.org/docs/stable/generated/torch.nn.functional.glu.html) and [here](https://github.com/pytorch/pytorch/blob/f3dd2a544c787aa11bcb84837a50195864f73cc9/aten/src/ATen/native/native_functions.yaml#L11564). See #2197 for usecase.
