feat: add multi stream append feature #3747

Job	Run time
Test / streams	4m 44s
Test / connection	5m 58s
Test / samples	3m 0s
Test / persistentSubscription	5m 31s
Test / opentelemetry	1m 20s
Test / projections	3m 36s
Test / extra	4m 12s
	28m 21s

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