🚀[FEA]: Add MultiGPU support in finetuning scripts of stokes Meshgraphnet example

[PranaySiddharthBhange]

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

Improvement

How would you describe the priority of this feature request

Critical (currently preventing usage)

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

No response

Describe any alternatives you have considered

No response