Enhance CLI Build Duration Output with Human-Readable Formatting (#4591)

* Use humantime for build duration formatting in CLI

Replaces manual millisecond formatting with humantime::format_duration for improved readability of build duration logs. Adds humantime as a dependency in Cargo.toml.

* Format build duration with millisecond precision

Changed build duration logging to use millisecond precision instead of default formatting to avoid microsecond/nanosecond noise.

* Refactor duration formatting to use helper function to reduce code duplication.

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Co-authored-by: Jonathan Kelley <jkelleyrtp@gmail.com>

Cargo.lock

@@ -5521,6 +5521,7 @@ dependencies = [
  "headers",
  "home",
  "html_parser",
+ "humantime",
  "hyper 1.8.1",
  "hyper-rustls 0.27.7",
  "hyper-util",