feat: transform roadm-paths into list indexed with frequency band #265

Job	Run time
Tox test (py38)	2m 44s
Tests on other platforms (windows-2019, 3.10)	4m 26s
Tests on paywalled platforms	0s
Tox test (py39)	2m 41s
Tests on other platforms (windows-2022, 3.11)	3m 21s
Tox test (py310)	2m 42s
Tests on other platforms (windows-2022, 3.12)	3m 13s
Tox test (py311)	2m 29s
Tests on other platforms (macos-12, 3.11)	2m 28s
Tox test (py312-cover)	5m 15s
Tests on other platforms (macos-13, 3.12)	3m 42s
Tox test (docs, graphviz)	1m 59s
Docker image	0s
PyPI packaging	0s
	35m 0s

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