Add an `otel-collector` module #99

Job	Run time
docs (authorize-private-service)	8s
docs (cloudevent-broker)	5s
docs (cloudevent-trigger)	5s
docs (cloudevent-recorder)	4s
docs (otel-collector)	4s
docs (networking)	4s
docs (dashboard/service)	7s
docs (dashboard/job)	8s
docs (dashboard/cloudevent-receiver)	4s
	49s

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