Add stream pool to avoid cuStreamCreate overhead

[simonbyrne]

Describe the bug

I tried adding multithreading to our code, and now we see occasional pauses due to CuStreamCreate:

Could be fixed by adding a Stream pool?

To reproduce

Available on request

Expected behavior

No pauses

Version info

Not sure exactly, I think it was Julia 1.8.5 with CUDA.jl 3.13.1 and CUDA 11.2.

Once our cluster upgrades the drivers, I can rerun with CUDA 12.

Additional context

cc @lcw