New surfaces module #522

Job	Run time
oorb-data / Download OpenOrb data for sbpy testing	5s
Python 3.11 with all optional dependencies (MacOS)	1s
tests / Load tox environments	8s
tests / Python 3.9 with oldest supported versions, measuring coverage	53s
tests / Python 3.13 with minimal dependencies, measuring coverage	47s
tests / Code style checks	26s
tests / Python 3.11 with all optional dependencies, measuring coverage	52s
	3m 12s

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