Add OTLP write handler benchmark #10538

Job	Run time
build	4m 14s
test	16m 3s
lint	4m 29s
CodeQL	6m 45s
integration-configs-db	2m 29s
integration (requires_docker)	7m 15s
integration (integration_alertmanager)	4m 19s
integration (integration_backward_compatibility)	10m 12s
integration (integration_memberlist)	7m 55s
integration (integration_querier)	15m 19s
integration (integration_ruler)	5m 30s
integration (integration_query_fuzz)	5m 4s
deploy_website	0s
deploy	0s
	1h 29m 34s

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