[Rust] [DataFusion] Add support for Aggregate UDFs #25804
Description
This will allow to more easily extend the existing offering of aggregate functions.
The existing functions shall be migrated to this interface.
Reporter: Jorge Leitão / @jorgecarleitao
Assignee: Jorge Leitão / @jorgecarleitao
PRs and other links:
Note: This issue was originally created as ARROW-9752. Please see the migration documentation for further details.