signature format & json path

[0xc0de4c0ffee]

json path gateway.tld/ipns/f<hash>/.well-known/eth/domain/...

    if (bytes(funcToFile[func]).length > 0) {
        _pathJSON = funcToFile[func];
    } else if (func == iResolver.text.selector) {
        _pathJSON = abi.decode(data[36:], (string));
    } else if (func == iResolver.addr.selector) {
        _pathJSON = string("_address/60");
    } else if (func == iOverloadResolver.addr.selector) {
        _pathJSON = string.concat("_address/", uintToNumString(abi.decode(data[36:], (uint256))));
    } else if (func == iResolver.interfaceImplementer.selector) {
        _pathJSON =
            string.concat("_interface/", bytes2HexString(abi.encodePacked(abi.decode(data[36:], (bytes4))), 0));
    } else if (func == iResolver.ABI.selector) {
        // recheck this
        _pathJSON = string.concat("_abi/", uintToNumString(abi.decode(data[36:], (uint256))));
    } else if (func == iResolver.dnsRecord.selector) {
        (bytes32 _name, uint16 resource) = abi.decode(data[36:], (bytes32, uint16));
        _pathJSON =
            string.concat("_dns/", bytes2HexString(abi.encodePacked(_name), 0), "/", uintToNumString(resource));
    } else {
        revert NotImplemented(func);
    }