feat(events): add step to emit events to GCP (#4901) #761

Job	Run time
Start	7s
Build Piper	1m 27s
Build integration tests	32s
Run integration tests ("(TestCNBIntegrationBindings\|TestCNBIntegrationWrongBuilderProject\|TestCNB...	1m 23s
Run integration tests ("TestCNBIntegrationPreserveFiles\b")	1m 13s
Run integration tests ("TestCNBIntegrationNPMProject")	1m 59s
Run integration tests ("TestCNBIntegrationMultiImage")	3m 8s
Run integration tests ("TestCNBIntegrationNPMCustomBuildpacksBuildpacklessProject")	1m 34s
Run integration tests ("TestCNBIntegrationNPMCustomBuildpacksFullProject")	1m 15s
Run integration tests ("TestCNBIntegrationProjectDescriptor")	1m 30s
Run integration tests ("TestCNBIntegrationPrePostBuildpacks")	1m 22s
Run integration tests ("TestGolangIntegration")	1m 43s
Run integration tests ("TestGradleIntegration")	1m 19s
Run integration tests ("TestMavenIntegration")	1m 44s
Run integration tests ("TestMTAIntegration")	2m 4s
Run integration tests ("TestTmsUploadIntegration")	1m 10s
Run integration tests ("TestTmsExportIntegration")	56s
Run integration tests ("Test(Gauge\|GCS\|GitHub\|GitOps\|Influx\|NPM\|Piper\|Python\|Sonar\|Vault\|Karma)In...	1m 17s
Finish	2s
	25m 45s

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