impl(o11y): introduce error attributes #237

Job	Run time
filter	1m 1s
build(8) except for gapic-generator-java	4m 8s
build(25) except self-service clients	12m 41s
build(21) except self-service clients	12m 36s
unmanaged_dependency_check	7m 38s
build (17)	13m 49s
build(8) for gapic-generator-java	11m 24s
dependency_analyzer_unit_test	1m 23s
build(8) for showcase	6h 5m 1s
showcase (21)	6h 5m 0s
gapic-generator-java-bom	2m 30s
showcase (17)	6h 5m 0s
showcase-clirr	5m 35s
build (11)	13m 57s
showcase (25)	6h 5m 0s
showcase (11)	6h 5m 0s
	1d 7h 51m 43s

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