[wip] Add support for OZ5's AccessManager permission management

[gnpar]

Already working: obtain the current permissions, export as a snapshot, compare the current state with a given snapshot.

Still pending:

• Tests for the new functionality
• Optimize the node calls, no need to do a separate call for each event if we can get all in a single call
• Add support for delays
• Implement callback support for address and role name resolutions
• Refactor the object model to fully type the event stream and the snapshot, and to reference actual role objects instead of keeping the int id
• Build the graph for access manager

Example output for python -m eth_permissions 0xa29DF9825F283B2fA7a26B4627F84aDa80cDD79a on polygon:

{
  "0": {
    "label": "ADMIN_ROLE",
    "id": 0,
    "guardian": 0,
    "admin": 0,
    "members": [
      "0xCfcd29CD20B6c64A4C0EB56e29E5ce3CD69336D2"
    ],
    "targets": {}
  },
  "18446744073709551615": {
    "label": "PUBLIC_ROLE",
    "id": 18446744073709551615,
    "guardian": 0,
    "admin": 0,
    "members": [],
    "targets": {
      "0x90F9B3B51632a530B065F7D2285FAF8F93DE3efA": [
        "0x95d89b41",
        "0x5b2c3837",
        [...]
        "0xd9f9027f",
        "0x38d52e0f",
        "0xce96cb77"
      ],
      "0x14F6DFEE761455247C6bf2b2b052a1F6245dD6FB": [
        "0x95d89b41",
        "0x51a2d6d1",
        [...]
        "0xd9f9027f",
        "0x38d52e0f",
        "0xce96cb77"
      ]
    }
  }
  ...
}

[gnpar]

In the compare output, make it method calls directly.