[FEA] Enable per thread default streams in pylibcudf

[Matt711]

Is your feature request related to a problem? Please describe.
We should enable per thread default streams in pylibcudf.

Describe the solution you'd like
I think we can do this by exposing cudf::is_ptds_enabled in pylibcudf and using it to set the default stream to PER_THREAD_DEFAULT_STREAM from pylibrmm.

Describe alternatives you've considered
None

Additional context
#17620

[vyasr]

Did you see #17626? I don't know if we will ever ship builds for Python usage that have PTDS enabled at compile-time by default. If we did, though, rather than using is_ptds_enabled couldn't we just wrap get_default_stream in Python directly?

[Matt711]

Did you see #17626? I don't know if we will ever ship builds for Python usage that have PTDS enabled at compile-time by default. If we did, though, rather than using is_ptds_enabled couldn't we just wrap get_default_stream in Python directly?

No I didn't, thanks for the link. Yes I think we could just expose get_default_stream. It would look something likecpdef Stream get_default_stream().

I assigned #17626 to me, but we can probably discuss this more offline before I start actively working on it.