feat: Introducing OpentelemetryMetricsRecorder #5317

Job	Run time
build(8) except for gapic-generator-java	3m 40s
build(8) for gapic-generator-java	36s
build (11)	5m 53s
build(21) except self-service clients	4m 55s
build (17)	5m 33s
compatibility	33s
gapic-generator-java-bom	1m 52s
lint	20s
showcase (11)	1m 29s
showcase-clirr	2m 18s
showcase (17)	1m 33s
showcase-native	1m 27s
unmanaged_dependency_check	4m 23s
	34m 32s

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