otelgrpc: Add metrics support to NewServerHandler and NewClientHandler #7791

Job	Run time
integration (test-mongo-driver)	8s
lint	4m 26s
compatibility-test (~1.21.3, ubuntu-latest, 386)	4m 21s
test-coverage	3m 48s
compatibility-test (~1.21.3, ubuntu-latest, amd64)	2m 22s
test-race	3m 36s
compatibility-test (~1.21.3, macos-latest, amd64)	4m 31s
compatibility-test (~1.21.3, windows-latest, 386)	6m 7s
compatibility-test (~1.21.3, windows-latest, amd64)	8m 23s
compatibility-test (~1.20.10, ubuntu-latest, 386)	2m 29s
compatibility-test (~1.20.10, ubuntu-latest, amd64)	54s
compatibility-test (~1.20.10, macos-latest, amd64)	5m 0s
compatibility-test (~1.20.10, windows-latest, 386)	10m 1s
compatibility-test (~1.20.10, windows-latest, amd64)	7m 57s
test-integration	2s
test-compatibility	1s
	1h 4m 6s

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