Add comprehensive PyTorch tutorial in Y Minutes format
This pull request introduces a concise yet thorough PyTorch tutorial that serves as both a quick reference and a learning resource. The tutorial covers essential PyTorch concepts from basic tensor operations to advanced features like distributed training and model deployment.
Key features:
- Structured progression from installation to advanced topics
- Practical code examples with explanatory comments
- Clear sections on tensors, neural networks, and training workflows
- Coverage of modern PyTorch features like ONNX export and TorchScript
- Follows the "Learn X in Y Minutes" style guide
The tutorial is designed to help both beginners getting started with PyTorch and experienced developers looking for quick references. All code examples are tested and follow PyTorch best practices.
