ERC165 Identifier for CCIP2.eth/ENSIP-15 Compatible Resolvers

[0xc0de4c0ffee]

__callback(bytes,bytes) => 0xc55a5d59
we can use __callback function selector to check if resolver supports off-chain records.

    function supportsInterface(bytes4 interfaceID) external pure returns (bool) {
        return (
                interfaceID == iCCIP.resolve.selector // ENSIP-10 (a)
                || interfaceID == iResolver.setContenthash.selector // resolver set ipns/ipfs contenthash (b)
                || interfaceID == iCCIP.__callback.selector // CCIP2/ENSIP-XV (c)
                || interfaceID == iERC165.supportsInterface.selector // ERC165
        );
    }

we can rename callback to ___callback if it's too specific for otherresolver types? or use a^b^c format so it'll be more strict check??