Tests

Adding attributes to hold units used by MSContactor (#1396) #6366

Job	Run time
Check code formatting (Black)	34s
Check Spelling	6s
Compatibility tests	4m 20s
Pylint	4m 20s
Build Sphinx docs	5m 29s
pytest (py3.8/linux)	20m 3s
pytest (py3.8/win64)	33m 48s
pytest (py3.9/linux)	21m 21s
pytest (py3.9/win64)	31m 30s
pytest (py3.10/linux)	18m 32s
pytest (py3.10/win64)	37m 31s
pytest (py3.11/linux)	27m 10s
pytest (py3.11/win64)	50m 18s
pytest (py3.12/linux)	15m 12s
pytest (py3.12/win64)	27m 31s
Upload coverage report (Codecov) (linux)	12s
Upload coverage report (Codecov) (win64)	13s
	4h 58m 10s

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