Poster on torchft and HyperPod integration (#310)

Summary:
Added poster from PyTorch 2025 conference on "Building Resilient Foundation Model Training Pipelines with SageMaker HyperPod and TorchFT"

Pull Request resolved: #310

Reviewed By: tushar00jain

Differential Revision: D95138856

Pulled By: d4l3k

fbshipit-source-id: 098baa3b1d67122e5471b85828f03877cb70b3ed

Author: allela-roy