Feature: Clean up displayed package descriptions

[JoshuaKGoldberg]

Splitting out of #352, and summarizing context:

The generator search in the yo CLI leaves a lot to be desired.
I just made it so that the generator description is shown in the search: f5ab6e9
This is how it currently looks:

But, I think we can do a lot better!

Some other things I think we should do:

• Cleanup package descriptions. Lots of bad ones. Meaning this thing should be moved to yeoman-generator-list so both the website and CLI and any other consumer can take advantage of it.

Note: I haven't yet triaged whether this task was already done. Just splitting out an issue from #352 for visibility.

Co-authored-by: @sindresorhus

[JoshuaKGoldberg]

...and now triaging as a maintainer: I'm 👍 on sharing the description cleanup logic. It seems potentially confusing for users that the CLI and website show different descriptions. WDYT @UlisesGascon?

[UlisesGascon]

Agree, also I love the idea that we can use this for the website too 👍