feat: Introduce OpenTelemetry Metrics Recording #5425

Job	Run time
build(21) except self-service clients	11m 3s
build (11)	12m 9s
build (17)	12m 2s
build(8) except for gapic-generator-java	3m 40s
build(8) for gapic-generator-java	10m 3s
compatibility	1m 43s
lint	32s
showcase (11)	4m 14s
showcase-clirr	3m 16s
showcase (17)	4m 18s
showcase-native	8m 6s
gapic-generator-java-bom	4m 12s
unmanaged_dependency_check	4m 22s
	1h 19m 40s

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