feat: add benchmark for last

[umsungjun]

Added last.bench.ts for performance comparison with Lodash.
Removed duplicated test cases from last.test.ts.

[github-actions]

✅ All utility modules are properly registered in index.ts and package.json exports!

[github-actions]

Benchmark Results

Method	Test	Performance Comparison	hidash ops/sec	lodash@4.17.21 ops/sec
last	src/last.bench.ts > last performance	hidash is 4.52x faster	2273.15 🏆	503.01

Note: Higher operations per second (ops/sec) numbers are better. Each test compares hidash vs lodash implementation.

⚠️ indicates where hidash is slower than lodash.

🏆 indicates the faster implementation.

View Full Benchmark Data

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  "files": [
    {
      "filepath": "/home/runner/work/hidash/hidash/src/last.bench.ts",
      "groups": [
        {
          "fullName": "src/last.bench.ts > last performance",
          "benchmarks": [
            {
              "id": "219956842_0_0",
              "name": "hidash",
              "rank": 1,
              "rme": 0.8468204792761417,
              "samples": [],
              "totalTime": 500.18623299999837,
              "min": 0.4027219999999261,
              "max": 1.0208169999999654,
              "hz": 2273.1533276726623,
              "period": 0.439917531222514,
              "mean": 0.439917531222514,
              "variance": 0.004107462106791707,
              "sd": 0.06408948514999716,
              "sem": 0.0019006692583256447,
              "df": 1136,
              "critical": 1.96,
              "moe": 0.0037253117463182635,
              "p75": 0.4361050000000546,
              "p99": 0.8358410000000163,
              "p995": 0.8669090000000779,
              "p999": 0.9831560000000081,
              "sampleCount": 1137,
              "median": 0.428278999999975
            },
            {
              "id": "219956842_0_1",
              "name": "lodash",
              "rank": 2,
              "rme": 0.5110840071196997,
              "samples": [],
              "totalTime": 500.980728999999,
              "min": 1.9327990000000455,
              "max": 3.1327890000000025,
              "hz": 503.01336042009814,
              "period": 1.9880187658730117,
              "mean": 1.9880187658730117,
              "variance": 0.006771953068156103,
              "sd": 0.08229187729148062,
              "sem": 0.005183901005569077,
              "df": 251,
              "critical": 1.96,
              "moe": 0.01016044597091539,
              "p75": 1.989955000000009,
              "p99": 2.251323999999954,
              "p995": 2.320022000000108,
              "p999": 3.1327890000000025,
              "sampleCount": 252,
              "median": 1.977292000000034
            }
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        }
      ]
    }
  ]
}

Last updated by GitHub Actions

[yujeong-jeon]

I'm surprised by your fast pace of work 😮 👍

Thank you for contributing today as well!

[umsungjun]

First of all, I'd like to sincerely thank the NaverPay team for developing the hidash open source library.
I truly appreciate the kind and encouraging words you leave every time I submit a PR they always motivate me.

Thanks to your support, I've been learning a lot. I’ll continue contributing consistently and do my best to be helpful to the hidash project. Thank you again!