add math min and math max to bench command (#12913)

# Description

This PR adds min and max to the bench command.
```nushell
❯ use std bench
❯ bench { dply -c 'parquet("./data.parquet") | group_by(year) | summarize(count = n(), sum = sum(geo_count)) | show()' | complete | null } --rounds 100 --verbose
100 / 100
╭───────┬───────────────────╮
│ mean  │ 71ms 358µs 850ns  │
│ min   │ 66ms 457µs 583ns  │
│ max   │ 120ms 338µs 167ns │
│ std   │ 6ms 553µs 949ns   │
│ times │ [list 100 items]  │
╰───────┴───────────────────╯
```

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crates/nu-std/std/mod.nu

@@ -148,6 +148,8 @@ export def bench [
 
     let report = {
         mean: ($times | math avg | from ns)
+        min: ($times | math min | from ns)
+        max: ($times | math max | from ns)
         std: ($times | math stddev | from ns)
         times: ($times | each { from ns })
     }