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Micah KornfieldAntoine Pitrou
6a8f84d5e28
Micah Kornfield authored and Antoine Pitrou committed 8eea173445e
ARROW-7960: [C++] Add support fo reading additional types

New types supported:
- Fixed Size list (will throw an incorrect error if nulls).   Null slot count is best implemented after we recursively apply metadata.
- LargeList
- Maps

Still missing: LargeString and LargeBytes

Unimplemented functionality:
  - Removing duplicate maps on read.
  - Single column maps are converted to List of struct.

Other:
 Fixed two bugs for FixedSizeLists:
1.  Def levels genereated were incorrect (they only made sense for
    two level lists).
2.  Slices where not handled appropriately

Closes #8376 from emkornfield/read_most_types

Lead-authored-by: Micah Kornfield <emkornfield@gmail.com>
Co-authored-by: Antoine Pitrou <antoine@python.org>
Signed-off-by: Antoine Pitrou <antoine@python.org>