Example of PRIVATEUSE1 for custome device

With the arrival of version 2.1 of Pytorch, Pytorch has defined new interfaces for extending custom hardware, which makes it more convenient to use custom hardware to leverage Pytorch,
GitHub - Ascend/pytorch: Ascend PyTorch adapter (torch_npu). Mirror of https://gitee.com/ascend/pytorch is a good example to use it, but it is too complicated,So does Pytorch have any plans to write a complete routine on how to adapt to custom hardware?