argparse: colorize the `--help` output with rich-argparse #2447

Job	Run time
build_test_container	9m 58s
No leftovers	3m 22s
CWL conformance (v1.0, docker)	6m 33s
CWL conformance (v1.0, singularity)	6m 42s
Test on macos-latest	6m 35s
cwltool release test	13m 8s
CWL conformance (v1.0, podman)	6m 32s
CWL conformance (v1.1, docker)	7m 22s
Tox (3, 9, lint)	27s
CWL conformance (v1.1, singularity)	7m 36s
Linters (lintreadme)	31s
Tox (3, 9, unit)	4m 59s
CWL conformance (v1.1, podman)	8m 12s
Linters (shellcheck)	15s
Tox (3, 9, bandit)	34s
CWL conformance (v1.2, docker)	9m 2s
Linters (pydocstyle)	18s
Tox (3, 9, mypy)	6m 51s
CWL conformance (v1.2, singularity)	9m 10s
Tox (3, 10, lint)	29s
CWL conformance (v1.2, podman)	9m 8s
Tox (3, 10, unit)	5m 36s
CWL conformance (v1.2, docker, --fast-parser)	9m 0s
Tox (3, 10, bandit)	21s
CWL conformance (v1.3.0-dev1, --relax-path-checks)	5m 53s
Tox (3, 10, mypy)	6m 53s
Tox (3, 11, lint)	24s
Tox (3, 11, unit)	4m 36s
Tox (3, 11, bandit)	25s
Tox (3, 11, mypy)	6m 12s
Tox (3, 12, lint)	29s
Tox (3, 12, unit)	6m 18s
Tox (3, 12, bandit)	27s
Tox (3, 12, mypy)	7m 23s
Tox (3, 13, lint)	40s
Tox (3, 13, unit)	6m 43s
Tox (3, 13, bandit)	31s
Tox (3, 13, mypy)	1m 4s
	3h 0m 39s

Provide feedback