🚀[FEA]: Unify ONNX utils

[NickGeneva]

Is this a new feature, an improvement, or a change to existing functionality?

Improvement

How would you describe the priority of this feature request

Low (would be nice)

Please provide a clear description of problem you would like to solve.

A few of the models use ONNX checkpoints and have the same functions shared across each for creating onnx runtimes.

Can migrate into util file.