[C++] Implement array_sort_indices and sort_indices for BOOL type

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Reporter: Ian Cook / @ianmcook
Assignee: Niranda Perera / @nirandaperera

Related issues:

• [C++] sort_indices - implement kernel that allows sorting by boolean field (duplicates)

PRs and other links:

• GitHub Pull Request #10585

_{Note: This issue was originally created as ARROW-12016. Please see the migration documentation for further details.}

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Antoine Pitrou / @pitrou:
cc @edponce @nirandaperera :-)

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Joris Van den Bossche / @jorisvandenbossche:
This has a PR in progress, so moving back to 5.0.0

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Niranda Perera / @nirandaperera:
@jorisvandenbossche yes, this is almost complete.

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Antoine Pitrou / @pitrou:
Issue resolved by pull request 10585
#10585