Handle mns resolution as address

Most commands require an address as a parameter. For now, we only spport basic addresses (like `AS1...`). Supporting MNS domains resolution would make the CLI more user-friendly as you could simply type `something.massa`, or even just `something` and check the MNS contract to resolve the address automagically.

Start by locating the CLI command argument handling and the code that currently validates basic addresses. Trace how the MNS contract can be queried for a name, including both `.massa` and bare names. Done means supported commands resolve those names to addresses while continuing to accept basic addresses.

Written by the indexing model from the issue text.