ft: ZENKO-2968 enable sharding on bucket creation

[vrancurel]

Enable sharding on bucket creation (experimental - open for comments)

[bert-e]

Hello vrancurel,

My role is to assist you with the merge of this
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[bert-e]

Waiting for approval

The following approvals are needed before I can proceed with the merge:

• the author

• 2 peers

Peer approvals must include a mandatory approval from @jonathan-gramain.

[vrancurel]

This code is experimental, e.g. I assume if replicaset === undefined we want sharding, we probably want to propagate an explicit config param for enabling sharding.

[vrancurel]

Also we need to manage changestreams for the LogConsumer