[C++] Draft initial public APIs for Datasets project #21960
Description
The objective of this is to ensure general alignment with the discussion document
https://docs.google.com/document/d/1bVhzifD38qDypnSjtf8exvpP3sSB5x_Kw9m-n66FB2c/edit?usp=sharing
so that an initial working implementation can begin to take place
Reporter: Wes McKinney / @wesm
Assignee: Wes McKinney / @wesm
PRs and other links:
Note: This issue was originally created as ARROW-5512. Please see the migration documentation for further details.