`feat: Add Tutorial for Programmatic Safe (Gnosis) Deployment

[jadonamite]

Summary

This PR adds a guide on deploying Safe Smart Accounts programmatically using the SafeProxyFactory on Base. This is critical for protocols needing to spin up user wallets.
Content

• Helper Contract: SafeDeployer.sol wrapper for the factory interaction.
• Script: DeploySafe.s.sol that targets Base Sepolia official addresses.
• Test: Integration test (requires --fork-url) to verify proxy initialization.

Verification

• forge test --fork-url $BASE_SEPOLIA_RPC passes.
• Successfully deployed a Safe Proxy on Base Sepolia.
• Confirmed setup() initialized the owner correctly.

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[cb-heimdall]

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