feat: Introduce OpenTelemetry Metrics Recording #5704

Job	Run time
build(21) except self-service clients	11m 49s
build(8) except for gapic-generator-java	4m 9s
build(8) for gapic-generator-java	9m 22s
build (11)	12m 38s
compatibility	1m 51s
build (17)	12m 40s
lint	23s
showcase (11)	4m 16s
showcase (17)	4m 14s
gapic-generator-java-bom	1m 51s
showcase-clirr	3m 13s
showcase-native	8m 15s
unmanaged_dependency_check	4m 5s
	1h 18m 46s

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