Support to decode `revert` selector name

[acuarica]

This PR includes support to display revert selector names, i.e., custom errors as described in https://docs.soliditylang.org/en/latest/control-structures.html#revert.

// SPDX-License-Identifier: GPL-3.0
pragma solidity ^0.8.4;

contract VendingMachine {
    address owner;
    error Unauthorized();
    function withdraw() public {
        if (msg.sender != owner)
            revert Unauthorized();

        payable(msg.sender).transfer(address(this).balance);
    }
}

It solves this by attaching to each Revert Stmt a signature declaration object to be patched after executing is done. Moreover, it includes support to fetch and patch revert signatures in 4byte and 4bytedb.

[acuarica]

Fixes #2.