Add NWBZarrIO.read_nwb convenience function #917

Job	Run time
conda-linux-python3.8-minimum	2m 6s
linux-gallery-python3.8-minimum	52s
linux-gallery-python3.12-upgraded	1m 2s
linux-python3.8-minimum	1m 51s
windows-gallery-python3.8-minimum	2m 31s
conda-linux-python3.12-upgraded	3m 30s
linux-python3.12	2m 19s
windows-gallery-python3.12-upgraded	2m 8s
linux-python3.12-upgraded	4m 52s
windows-python3.8-minimum	2m 57s
windows-python3.12-upgraded	6m 45s
macos-python3.8-minimum	2m 53s
macos-python3.12-upgraded	3m 50s
Deploy pre-release from dev	0s
	37m 36s

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