Add --simulate-latency option to simulate object storage performance #20957

Is your feature request related to a problem or challenge?

We want to improve performance on object storage. For that we need to improve our IO / CPU pipelining (e.g. prefetching).

We want to measure the impact of improvements on benchmarks.

Describe the solution you'd like

Add a ObjectStore implementation that introduces S3-like latencies.

Describe alternatives you've considered

No response

Additional context

No response