[C++] Refactor DefLevelsToBitmap #24595
Description
The current code is should be split apart and made more efficient to consolidate logic need to support all nesting combinations.
We need to be able to pass in an arbitrary min definitions level to prune away elements that aren't included in lists.
The functionality is also somewhat replicated in reading the struct code, the two paths should be consolidated.
Reporter: Micah Kornfield / @emkornfield
Assignee: Micah Kornfield / @emkornfield
PRs and other links:
Note: This issue was originally created as ARROW-8413. Please see the migration documentation for further details.