feat: short description for each add-on

[benmccann]

closes #297
closes #247

I've seen this feedback a number of times now, so think it's worth doing something here if we can keep the design clean enough

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commit: 322110d

[AdrianGonz97]

I don't know, #297 is the first time that I've seen a complaint relating to this. I'm also having a hard time finding any similar complaints when I search through the discord and reddit. Not sure if this is a real issue that people actually face

[manuel3108]

Agree with @AdrianGonz97, haven't seen any feedback beside the one mentioned earlier

[benmccann]

I don't know if I'm going to be able to go back and find them, but there is #253:

For some addons it's pretty obvious what they do, but for others a link or a description would be very helpful. For example, unless you already know what mdsvex is, you're unlikely to know that that's what you want to be able to use Markdown in your Svelte components.

That issue was referring to our docs, but it's just as true that we don't have a description in the CLI

And of course there have been lots of folks confused about the Lucia adder (e.g. #217, #189, on reddit, etc.). This would allow us to close #247 as well, by clarifying that it's the guide in the hint.

[manuel3108]

Already forgot about the the lucia stuff, convinced.

[manuel3108]

Rebasing basically resulted in rewrite. I hate merge conflicts!