Adds a GetItem operator array

[gatesn]

No description provided.

[codspeed-hq]

CodSpeed Performance Report

Merging #5110 will degrade performances by 10.02%

_{Comparing ngates/get-item (9c4193a) with develop (846f65f)}

Summary

❌ 1 regression
✅ 1317 untouched
🆕 7 new
⏩ 50 skipped¹

⚠️ Please fix the performance issues or acknowledge them on CodSpeed.

Benchmarks breakdown

	Benchmark	BASE	HEAD	Change
❌	decode_primitives[f32, (1000, 32)]	22.6 µs	25.1 µs	-10.02%
🆕	decompress[("alp_for_bp_f64", 0x72f570)]	N/A	24.2 ms	N/A
🆕	decompress[("datetime_for_bp", 0x732850)]	N/A	34.9 ms	N/A
🆕	decompress[("dict_fsst_varbin_bp_string", 0x731960)]	N/A	14.5 ms	N/A
🆕	decompress[("dict_fsst_varbin_string", 0x7312d0)]	N/A	14.5 ms	N/A
🆕	decompress[("dict_varbinview_string", 0x72ff90)]	N/A	14.7 ms	N/A
🆕	decompress[("for_bp_u64", 0x72ee20)]	N/A	2.5 ms	N/A
🆕	decompress[("runend_for_bp_u32", 0x730420)]	N/A	2 ms	N/A

Footnotes

1. 50 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

[codecov]

Codecov Report

❌ Patch coverage is 80.51948% with 30 lines in your changes missing coverage. Please review.
✅ Project coverage is 85.79%. Comparing base (846f65f) to head (9c4193a).
⚠️ Report is 2 commits behind head on develop.

Files with missing lines	Patch %	Lines
vortex-array/src/compute/arrays/get_item.rs	82.75%	25 Missing ⚠️
vortex-array/src/compute/arrays/is_not_null.rs	0.00%	2 Missing ⚠️
vortex-dtype/src/dtype.rs	66.66%	2 Missing ⚠️
vortex-array/src/compute/arrays/is_null.rs	0.00%	1 Missing ⚠️

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