Display the alias name of cabals when in multi-cabal mode

[narFnarF]

When using multi-cabal mode, the interface currently display each cabal as their cabal-key (or a short version of it). It makes it hard to distinguish each cabal when joining more than 2.

Suggestion: Display the user selected alias of each cabal instead (or in addition to) their cabal-key.

[hackergrrl]

It looks like cabal aliases don't currently get passed down into cabal-client. If someone wanted to do a fix, I think the steps would look like

1. Plumb a new opts.cabalAliases param down into Client in cabal-client, passing config.aliases into this from cabal-cli.
2. Save that arg to this.cabalAliases in the Client constructor.
3. Plumb any aliases for a cabal down into any CabalDetails that get created as a new opts parameter.
4. Expose a cabal's aliases as e.g. CabalDetails.getAliases().
5. Use that new method in neat-screen.js in cabal-cli to render all aliases for that cabal in the info line.