onnxruntime

Adding support for saving and loading train step info properties in the state dict and checkpoint file. (#10569)

* Adding optimization step and step parameter to the ORTTrainer constructor

* Added ORTTrainerOptions for optimization step

* Adding Train Step Info Settings to State Dictionary

* Adding train step info key

* Updating comments

* Reverting changes

* Updating test case for new state dict entry train_step_info