Implement state diff for starknet_simulateTransactions trace API

[greged93]

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Is your feature request related to a problem? Please describe. The state diff computation is for now not executed in the starknet_simulateTransactions.

Describe the solution you'd like The endpoint starknet_simulateTransactions should return the state diff generated along with the simulation result and fee. The implementation can take inspiration using the below links related to pathfinder:

• https://github.com/eqlabs/pathfinder/blob/main/crates/executor/src/simulate.rs#L52
• https://github.com/eqlabs/pathfinder/blob/main/crates/executor/src/simulate.rs#L240
• https://github.com/eqlabs/pathfinder/blob/main/crates/executor/src/simulate.rs#L224