Add documentation for topology, service and sim-params files #216

Job	Run time
Tests on paywalled platforms (macos-13-xlarge, 3.12)	1m 12s
Tests on other platforms (windows-2019, 3.10)	3m 4s
Tox test (py38)	2m 41s
Tests on other platforms (windows-2022, 3.11)	2m 34s
Tox test (py39)	2m 34s
Tests on other platforms (windows-2022, 3.12)	3m 12s
Tox test (py310)	2m 35s
Tests on other platforms (macos-12, 3.11)	2m 44s
Tox test (py311)	2m 27s
Tests on other platforms (macos-13, 3.12)	4m 45s
Tox test (py312-cover)	5m 10s
Tox test (docs, graphviz)	1m 48s
Docker image	51s
PyPI packaging	0s
	35m 37s

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