Extend Log type with optional timestamp property ( from Geth eth_getLogs )

### Describe the Feature

Geth now returns block timestamp as per updated specification for eth_getLogs

For spec

https://github.com/ethereum/execution-apis/pull/639

https://github.com/ethereum/go-ethereum/releases/tag/v1.16.0
https://github.com/ethereum/go-ethereum/pull/31887

### Code Example

```shell

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