Drazen Urch

Add shared derivation material support for thread-safe key generation, use with NM clients

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- Add serialization support to DerivationMaterial for persistence/sharing - Implement shared derivation material in BaseClientBuilder with Arc for thread safety - Add network monitor support for deterministic key generation from...

Simulate different performance calculation methodologies

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This change is [](https://reviewable.io/reviews/nymtech/nym/5827)