Expose `duration` through `DispatchInfo` #454

Job	Run time
Test with nox (ubuntu-20.04, 3.11, ci_checks_max)	1m 36s
Build distribution packages	15s
Test with nox (ubuntu-20.04, 3.11, pytest_min)	1m 1s
Test documentation website generation	41s
Cross-arch tests with nox	0s
Cross-arch tests with nox	0s
Test package installation in different architectures	3m 19s
Test with nox	1s
Create GitHub release	0s
Publish documentation website to GitHub pages	0s
Publish packages to PyPI	0s
	6m 53s

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