feat: storage-diff.sh

[0xClandestine]

Usage:

> bash bin/storage-diff.sh --help                                                                                                                                                                    
Usage: bash bin/storage-diff.sh --rpc-url https://eth.llamarpc.com --etherscan-key 1234567890123456789012345678901234567890 --input contracts.json [--quiet] [--help]

Detects storage layout incompatibilities that could cause issues during upgrades.

Required:
    -r, --rpc-url <url>         RPC endpoint URL for the target network (default: https://eth.llamarpc.com).
    -e, --etherscan-key <key>   API key for Etherscan to fetch contract data.

Options:
    -i, --input <file>          JSON file containing contract details, see format below (default: contracts.json).
                                If not provided, reads from stdin.
    -q, --quiet                 Suppress informational output.
    -h, --help                  Show this help message.


Input JSON format:
{
  "contracts": [
    {
      "name": "AVSDirectory",
      "address": "0x135dda560e946695d6f155dacafc6f1f25c1f5af"
    },
    {
      "name": "DelegationManager",
      "address": "0x39053D51B77DC0d36036Fc1fCc8Cb819df8Ef37A"
    }
  ]
}

Example input JSON

{
  "contracts": [
    {
      "name": "AVSDirectory",
      "address": "0x135dda560e946695d6f155dacafc6f1f25c1f5af"
    },
    {
      "name": "DelegationManager",
      "address": "0x39053D51B77DC0d36036Fc1fCc8Cb819df8Ef37A"
    },
    {
      "name": "RewardsCoordinator",
      "address": "0x7750d328b314EfFa365A0402CcfD489B80B0adda"
    },
    {
      "name": "StrategyManager",
      "address": "0x858646372CC42E1A627fcE94aa7A7033e7CF075A"
    },
    {
      "name": "StrategyFactory",
      "address": "0x5e4C39Ad7A3E881585e383dB9827EB4811f6F647"
    },
    {
      "name": "EigenPodManager",
      "address": "0x91E677b07F7AF907ec9a428aafA9fc14a0d3A338"
    }
  ]
}