Add compliant event handler as extra, for use in other languages #906

Job	Run time
samples (Debug, windows-2022)	2m 21s
samples (Debug, ubuntu-24.04)	5m 10s
samples (Debug, macos-latest)	2m 5s
samples (Release, windows-2022)	9m 22s
samples (Release, macos-latest)	2m 33s
samples (Release, ubuntu-24.04)	5m 2s
	26m 33s

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