[Demo feature request] How to migrate existing sample-independent deep learning pipeline into Graph Machine Learning pipeline using GraphStorm

[zhjwy9343]

Tis Demo FR want to illustrate:

1. there is an existing pipeline for sample-independent deep learning task, e.g., image classification with Pytorch.
2. the deep learning task want to include graph information to enhance the task;
3. migrate the existing pipeline into GraphStorm to use the graph information with GNN model.