argparse: colorize the `--help` output with rich-argparse #2408

Job	Run time
Linters (lintreadme)	36s
Linters (shellcheck)	11s
Linters (pydocstyle)	19s
No leftovers	3m 1s
CWL conformance (v1.0, docker)	1m 0s
CWL conformance (v1.0, singularity)	1m 1s
CWL conformance (v1.0, podman)	1m 6s
cwltool release test	6m 20s
Tox (3, 9, lint)	24s
CWL conformance (v1.1, docker)	1m 7s
Tox (3, 9, unit)	5m 5s
CWL conformance (v1.1, singularity)	1m 5s
Tox (3, 9, bandit)	24s
CWL conformance (v1.1, podman)	1m 3s
Tox (3, 9, mypy)	6m 45s
CWL conformance (v1.2, docker)	57s
Tox (3, 10, lint)	32s
CWL conformance (v1.2, singularity)	1m 0s
Tox (3, 10, unit)	4m 47s
CWL conformance (v1.2, podman)	1m 8s
Tox (3, 10, bandit)	26s
CWL conformance (v1.2, docker, --fast-parser)	56s
Tox (3, 10, mypy)	6m 29s
CWL conformance (v1.3.0-dev1, --relax-path-checks)	55s
Tox (3, 11, lint)	27s
Tox (3, 11, unit)	4m 48s
Tox (3, 11, bandit)	27s
Tox (3, 11, mypy)	6m 24s
build_test_container	57s
Tox (3, 12, lint)	28s
Tox (3, 12, unit)	6m 11s
Test on macos-latest	8m 26s
Tox (3, 12, bandit)	25s
Tox (3, 12, mypy)	6m 38s
Tox (3, 13, lint)	35s
Tox (3, 13, unit)	6m 23s
Tox (3, 13, bandit)	35s
Tox (3, 13, mypy)	1m 5s
	1h 30m 26s

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