"util:new-language" doesn't create*OutputGenerator

[JoshuaKGoldberg]

What's going on?

I tried making a new supported source language:

npm run util:new-language -- --language-name PowerShell --language-extension .ps1 --base-name JavaScript --base-extension .js

Expected

Under each util/OutputGenerators/, there should be a new stub PowerShellOutputGenerator exporting a testPowerShellGenerator function.

Actual

There is not...