tests

docs: Add sample Cloud Run example application #5715

Job	Run time
unit tests (3.9)	1m 19s
integration tests (macos-latest, 3.13)	1m 31s
unit tests (3.13)	1m 7s
integration tests (windows-latest, 3.9)	1m 39s
integration tests (macos-latest, 3.9)	2m 15s
integration tests (windows-latest, 3.13)	1m 48s
integration tests (ubuntu-latest, 3.9)	1m 5s
integration tests (ubuntu-latest, 3.13)	1m 27s
	12m 11s

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