Add support for executing operators programmatically in notebooks #3824

Job	Run time
build / changes	30s
build / build	2m 44s
e2e / test-e2e	19m 37s
test / test-app	1m 16s
test / test-python (ubuntu-latest-m, 3.8)	11m 9s
test / test-python (ubuntu-latest-m, 3.10)	10m 39s
all-tests	1s
	45m 56s

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