Implement state diff for starknet_simulateTransactions trace API

[greged93]

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