add slots to DAQmx-property-containing classes #1299

Job	Run time
Run CI / Build / Build	1m 8s
Run CI / Generate docs / Generate docs	51s
Run CI / Run unit tests / Run unit tests (ubuntu-latest, 3.8)	49s
Run CI / Run unit tests / Run unit tests (ubuntu-latest, 3.9)	45s
Run CI / Run unit tests / Run unit tests (ubuntu-latest, 3.10)	44s
Run CI / Run unit tests / Run unit tests (ubuntu-latest, 3.11)	49s
Run CI / Run unit tests / Run unit tests (ubuntu-latest, 3.12)	53s
Run CI / Run unit tests / Run unit tests (ubuntu-latest, 3.13)	1m 16s
Run CI / Run unit tests / Run unit tests (windows-latest, 3.8)	1m 27s
Run CI / Run unit tests / Run unit tests (windows-latest, 3.9)	1m 28s
Run CI / Run unit tests / Run unit tests (windows-latest, 3.10)	2m 2s
Run CI / Run unit tests / Run unit tests (windows-latest, 3.11)	1m 36s
Run CI / Run unit tests / Run unit tests (windows-latest, 3.12)	1m 49s
Run CI / Run unit tests / Run unit tests (windows-latest, 3.13)	3m 37s
Run CI / Run system tests / Run system tests (win-10-py32)	39m 50s
Run CI / Run system tests / Run system tests (win-10-py64)	37m 57s
Run CI / Report test results / Report test results	25s
	1h 37m 26s

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