I was at Stanford a few months ago and discussed with Chris Maes (lead developer of cuOpt).
Based on the current implementation and our discussion, I don’t really see the advantage compared to cu-pdlp or HiGHS with the support of it.
JuMP / MOI is also not GPU-oriented so I am not sure what you want to achieve at the end except maybe a proof-of-concept or testing the accuracy.
If you want to work on it, be aware that it is not a small task.