feat(plugin-outdated): add alias out

[rromanv]

similar to how the update command has up as alias, adding out as alias to outdated

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[zkochan]

We only use aliases that are used by npm cli. There no such alias in npm https://docs.npmjs.com/cli/v8/commands/npm-outdated

[rromanv]

We only use aliases that are used by npm cli. There no such alias in npm https://docs.npmjs.com/cli/v8/commands/npm-outdated

Yeah, I see, I have been using npm out for so long that I assumed is an alias, but just noticed I have the same effect using npm ou or npm outd, looks like with just a subset is enough

[rromanv]

I see now why it works, I noticed on cmd-list.js from npm uses abrev-js