Add OpenAlias support

[layters]

Details

For a more user-friendly experience and a human-readable way to simplify sending payments without having to memorize 95-200 character length addresses.

A standard that allows you to use an email or domain syntax to pay someone instead of an address, eg. donate@getmonero.org or donate.getmonero.org.
More information can be found on the OpenAlias website

sauce: https://www.getmonero.org/resources/moneropedia/openalias.html