Implement BIP-155 (addrv2 message) support
ref. https://github.com/bitcoin/bips/blob/master/bip-0155.mediawiki
This is needed for Tor v3 support, which we also want to add since v2 is deprecated and being phased out.
ref. https://github.com/bitcoin/bips/blob/master/bip-0155.mediawiki
This is needed for Tor v3 support, which we also want to add since v2 is deprecated and being phased out.