[C++] Provide APIs for adding "docstrings" to arrow::compute::Function classes that can be accessed by bindings #25270
Description
Reporter: Wes McKinney / @wesm
Assignee: Antoine Pitrou / @pitrou
Related issues:
- [Python] Improve ergonomics of compute functions (relates to)
PRs and other links:
Note: This issue was originally created as ARROW-9164. Please see the migration documentation for further details.