[Chapel Merge] Tech note about our initial GPU support

Branch: refs/heads/main
Revision: eff355a
Author: stonea
Log Message:

Merge pull request #18384 from stonea/gpu_tech_note

Tech note about our initial GPU support.

[Reviewed by @mppf and @e-kayrakli and @daviditen]

Modified Files:
A doc/rst/technotes/gpu.rst

M doc/rst/technotes/index.rst

Compare: https://github.com/chapel-lang/chapel/compare/6ef09e863dac...eff355a7f869