[C++] Implement Partition DataSource #22629
Description
This is a DataSource that also has partition metadata. The end goal is to support filtering with a DataSelector/Filter expression. The initial implementation should not deal with PartitionScheme yet.
Reporter: Francois Saint-Jacques / @fsaintjacques
Assignee: Ben Kietzman / @bkietz
PRs and other links:
Note: This issue was originally created as ARROW-6244. Please see the migration documentation for further details.