feat(contracts-bedrock): Gnosis Safe Tx Hash Validation

[refcell]

Description

This introduces a SafeBuilder function to compute the gnosis safe tx hash for given safe and proxy admin addresses. It is wrapped by the downstream child PostSherlock.s.sol and PostSherlockL2.s.sol scripts.

Can be run using forge script --sig as shown below.

NOTE: Alchemy keys need to be supplied to the following commands.

forge script \
    --rpc-url https://opt-goerli.g.alchemy.com/v2/<API_KEY> \
    --sig "computeSafeTransactionHash(address,address)" \
    scripts/upgrades/PostSherlockL2.s.sol \
    <SAFE_ADDRESS> <PROXY_ADMIN_ADDRESS>

forge script \
    --rpc-url https://eth-goerli.g.alchemy.com/v2/<API_KEY> \
    --sig "computeSafeTransactionHash(address,address)" \
    scripts/upgrades/PostSherlock.s.sol \
    <SAFE_ADDRESS> <PROXY_ADMIN_ADDRESS>

Metadata

• Fixes CLI-3769

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[tynes]

I'd like to see what this looks like rebased on #5555

[mergify]

Hey @refcell! This PR has merge conflicts. Please fix them before continuing review.

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