feat: optional state diff output

[jackchuma]

Adds a StateDiff library that facilitates optional state diff recording to a local file after transaction simulation. This allows us to analyze the transaction state diff using forge cheatcodes instead of having to maintain our own custom evm database implementation. Tasks that wish to use this feature need to set RECORD_STATE_DIFF=true in their .env file

[cb-heimdall]

✅ Heimdall Review Status

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[leopoldjoy]

It looks great to me! I left a couple things I noticed below.