Add sort option to automodsumm #211

Job	Run time
tests (Code style checks, ubuntu-latest, 3.x, codestyle)	28s
tests (ubuntu-latest, 3.8, py38-test-sphinx_oldest)	1m 2s
tests (ubuntu-latest, 3.8, py38-test-sphinx53)	1m 2s
tests (ubuntu-latest, 3.9, py39-test-sphinx62)	1m 10s
tests (ubuntu-latest, 3.9, py39-test-sphinx70)	1m 12s
tests (ubuntu-latest, 3.10, py310-test-sphinx71)	1m 8s
tests (ubuntu-latest, 3.11, py311-test-sphinx72-cov-clocale)	1m 21s
tests (ubuntu-latest, 3.12, py312-test-sphinxdev)	1m 16s
tests (macos-latest, 3.10, py310-test-sphinx72-clocale)	2m 42s
tests (macos-latest, 3.11, py311-test-sphinxdev)	5m 1s
tests (windows-latest, 3.8, py38-test-sphinx_oldest)	2m 52s
tests (windows-latest, 3.10, py310-test-sphinx72)	2m 37s
tests (windows-latest, 3.11, py311-test-sphinxdev)	2m 47s
	24m 38s

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