DEV-47 - Retain callback-based subscription APIs alongside AsyncEnume… #1254

Job	Run time
test / EventStore.Client.Streams/ubuntu-latest/net6.0/ci	10m 58s
test / EventStore.Client.PersistentSubscriptions/ubuntu-latest/net6.0/ci	11m 17s
test / EventStore.Client.Operations/ubuntu-latest/net6.0/ci	2m 34s
test / EventStore.Client.UserManagement/ubuntu-latest/net6.0/ci	4m 6s
test / EventStore.Client.ProjectionManagement/ubuntu-latest/net6.0/ci	3m 10s
test / EventStore.Client.Streams/ubuntu-latest/net7.0/ci	10m 35s
test / EventStore.Client.PersistentSubscriptions/ubuntu-latest/net7.0/ci	9m 30s
test / EventStore.Client.Operations/ubuntu-latest/net7.0/ci	2m 27s
test / EventStore.Client.UserManagement/ubuntu-latest/net7.0/ci	2m 31s
test / EventStore.Client.ProjectionManagement/ubuntu-latest/net7.0/ci	1m 28s
test / EventStore.Client.Streams/ubuntu-latest/net8.0/ci	11m 20s
test / EventStore.Client.PersistentSubscriptions/ubuntu-latest/net8.0/ci	9m 36s
test / EventStore.Client.Operations/ubuntu-latest/net8.0/ci	2m 2s
test / EventStore.Client.UserManagement/ubuntu-latest/net8.0/ci	2m 27s
test / EventStore.Client.ProjectionManagement/ubuntu-latest/net8.0/ci	1m 36s
	1h 25m 37s

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