[FEA]: Set up codeowners and automatic review assignment

[jrhemstad]

Is this a duplicate?

• I confirmed there appear to be no duplicate issues for this request and that I agree to the Code of Conduct

Area

Infrastructure

Is your feature request related to a problem? Please describe.

I would like certain individuals to be requested/required to review certain files.

Describe the solution you'd like

• Code ownership will be set for the following directories:
  • thrust/ - @nvidia/cccl-thrust-codeowners
  • cub/ - @nvidia/cccl-cub-codeowners
  • libcudacxx/ - @nvidia/cccl-libcudacxx-codeowners
  • .github/, ci/, .devcontainer/ - @nvidia/cccl-infra-codeowners
• Any CMakeLists.txt files and cmake/ directories are owned by @nvidia/cccl-cmake-codeowners.
• General code ownership for all files in the repository is assigned to @nvidia/cccl-codeowners.

(Membership for these teams has not been established yet)

When a new pull request is created, GitHub will now automatically request a review from the specific code owner(s) corresponding to the changed files, as well as a review from the general team (@cccl-codeowners). Therefore, each pull request will need to be approved by both a specific code owner and a general team member before it can be merged.