GH-15226: [C++] Add DurationType to hash kernels

[jorisvandenbossche]

DurationType was missing in the function to register the hash-based kernels (unique, dictionary_encode, etc)

• Closes: [Python] dictionary_encode support duration types #15226

[github-actions]

• Closes: [Python] dictionary_encode support duration types #15226

[github-actions]

⚠️ GitHub issue #15226 has been automatically assigned in GitHub to PR creator.

[pitrou]

+1, thanks @jorisvandenbossche

[jbrockmendel]

does this handle value_counts?

[jorisvandenbossche]

Yes, it's for unique, value_counts and dictionary_encode

[ursabot]

Benchmark runs are scheduled for baseline = 7e6bcd1 and contender = 4d9228f. 4d9228f is a master commit associated with this PR. Results will be available as each benchmark for each run completes.
Conbench compare runs links:
[Finished ⬇️0.0% ⬆️0.0%] ec2-t3-xlarge-us-east-2
[Finished ⬇️0.45% ⬆️0.0%] test-mac-arm
[Finished ⬇️0.0% ⬆️0.0%] ursa-i9-9960x
[Finished ⬇️0.19% ⬆️0.06%] ursa-thinkcentre-m75q
Buildkite builds:
[Finished] 4d9228fd ec2-t3-xlarge-us-east-2
[Finished] 4d9228fd test-mac-arm
[Finished] 4d9228fd ursa-i9-9960x
[Finished] 4d9228fd ursa-thinkcentre-m75q
[Finished] 7e6bcd1b ec2-t3-xlarge-us-east-2
[Finished] 7e6bcd1b test-mac-arm
[Finished] 7e6bcd1b ursa-i9-9960x
[Finished] 7e6bcd1b ursa-thinkcentre-m75q
Supported benchmarks:
ec2-t3-xlarge-us-east-2: Supported benchmark langs: Python, R. Runs only benchmarks with cloud = True
test-mac-arm: Supported benchmark langs: C++, Python, R
ursa-i9-9960x: Supported benchmark langs: Python, R, JavaScript
ursa-thinkcentre-m75q: Supported benchmark langs: C++, Java