[Feature Request]: User facing way to get a handle to the GPU stream

[e-kayrakli]

Summary of Feature

Description:
We want to be able to pass the stream that a specific task uses to an extern C function so that it can be used while launching a kernel on the stream that the Chapel task uses.

Is this issue currently blocking your progress?
Yes (?)

Code Sample

on here.gpus[0] {
  // how do I get the stream here?
  GPU.getCurrentStream(); // this could be a way
}