Add --base <run_id> to compare local run with another run

[GuillaumeLagrange]

$ codspeed run -m walltime                                                                                       1 ↵

 Running the benchmarks

     Walltime - Running `./rust/target/release/graph-benchmark` with exec-harness
    ╭─ 511 lines above ───────────────────────────────────────────────────────────────────────────────────────────────╮
    │ Fractal computation result: 157504                                                                              │
    │ Fractal computation result: 157504                                                                              │
    │ Fractal computation result: 157504                                                                              │
    │ Fractal computation result: 157504                                                                              │
    │ Fractal computation result: 157504                                                                              │
    │ Fractal computation result: 157504                                                                              │
    │ Fractal computation result: 157504                                                                              │
    │ Fractal computation result: 157504                                                                              │
    │ Fractal computation result: 157504                                                                              │
    │ Fractal computation result: 157504                                                                              │
    │ Fractal computation result: 157504                                                                              │
    │ Fractal computation result: 157504                                                                              │
    │ Fractal computation result: 157504                                                                              │
    │ Fractal computation result: 157504                                                                              │
    │ Fractal computation result: 157504                                                                              │
    │ Fractal computation result: 157504                                                                              │
    │ Fractal computation result: 157504                                                                              │
    │ Fractal computation result: 157504                                                                              │
    │ Fractal computation result: 157504                                                                              │
    │ Fractal computation result: 157504                                                                              │
    ╰─────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯

 Uploading results

  Performance data uploaded
  Linked repository: GuillaumeLagrange/local-runs
    Uploading results 3.4s

 Benchmark results

  Rust Fractal Exec: best 6.47 ms (396 iterations, rel. stddev: 3.35%, total 2.80 s)

  View full report: http://localhost:3000/GuillaumeLagrange/local-runs/runs/69bd6dc2724308afd1b36c4d
  To compare future runs against this one, use: --base 69bd6dc2724308afd1b36c4d

$ codspeed run -m walltime --base 69bd60894af4516d0aac60c7

 Running the benchmarks

     Walltime - Running `./rust/target/release/graph-benchmark` with exec-harness
    ╭─ 514 lines above ───────────────────────────────────────────────────────────────────────────────────────────────╮
    │ Fractal computation result: 157504                                                                              │
    │ Fractal computation result: 157504                                                                              │
    │ Fractal computation result: 157504                                                                              │
    │ Fractal computation result: 157504                                                                              │
    │ Fractal computation result: 157504                                                                              │
    │ Fractal computation result: 157504                                                                              │
    │ Fractal computation result: 157504                                                                              │
    │ Fractal computation result: 157504                                                                              │
    │ Fractal computation result: 157504                                                                              │
    │ Fractal computation result: 157504                                                                              │
    │ Fractal computation result: 157504                                                                              │
    │ Fractal computation result: 157504                                                                              │
    │ Fractal computation result: 157504                                                                              │
    │ Fractal computation result: 157504                                                                              │
    │ Fractal computation result: 157504                                                                              │
    │ Fractal computation result: 157504                                                                              │
    │ Fractal computation result: 157504                                                                              │
    │ Fractal computation result: 157504                                                                              │
    │ Fractal computation result: 157504                                                                              │
    │ Fractal computation result: 157504                                                                              │
    ╰─────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯

 Uploading results

  Performance data uploaded
  Linked repository: GuillaumeLagrange/local-runs
    Uploading results 1.1s

 Benchmark results

   Impact: +778.3%
  ╭────────────────────────────────────────────────────────────────╮
  │                            Walltime                           │
  ├───────────────────┬──────────┬─────────┬─────────┬─────────────┤
  │ Benchmark         │     Base │    Head │  Change │      Status │
  ├───────────────────┼──────────┼─────────┼─────────┼─────────────┤
  │ Rust Fractal Exec │ 56.94 ms │ 6.48 ms │ +778.3% │ Improvement │
  ╰───────────────────┴──────────┴─────────┴─────────┴─────────────╯

  View comparison report: http://localhost:3000/GuillaumeLagrange/local-runs/runs/compare/69bd60894af4516d0aac60c7..69bd6e18724308afd1b36c4e

[codspeed-hq]

Merging this PR will not alter performance

✅ 4 untouched benchmarks

---

_{Comparing cod-1796-make-comparison-between-two-local-runs-easier (2d85f8f) with main (6e55caf)}