`dump_binary` should indicate element and attribute names

[magicbadger]

Add an indication of a human readable element and attribute names to the dump.

For example, currently it is this:

         +-- Element 0x31
             +-- Attribute 0x80 : www.capitalfm.com
             +-- Attribute 0x81 : london

It should be this:

         +-- Element 0x31 (radiodns)
             +-- Attribute 0x80 (fqdn) : www.capitalfm.com
             +-- Attribute 0x81 (serviceIdentifier): london

Or even this:

         +-- radiodns (Element 0x31)
             +-- fqdn (Attribute 0x80) : www.capitalfm.com
             +-- serviceIdentifier (Attribute 0x81) : london