docs: use new nuxi module add command in installation

[danielroe]

🔗 Linked issue

❓ Type of change

• 📖 Documentation (updates to the documentation or readme)
• 🐞 Bug fix (a non-breaking change that fixes an issue)
• 👌 Enhancement (improving an existing functionality)
• ✨ New feature (a non-breaking change that adds functionality)
• 🧹 Chore (updates to the build process or auxiliary tools and libraries)
• ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

This updates the documentation to use the nuxi module add command which should simplify docs a bit and also improve user experience as there's no need to add to nuxt.config manually.

It's documented here.

I may have missed a few spots in the documentation as I'm doing this across the modules ecosystem assisted by the power of regular expressions ✨, so I'd appreciate a review 🙏

📝 Checklist

• I have linked an issue or discussion.
• I have updated the documentation accordingly.

[shinGangan]

Hi @danielroe , thanks for this PR.
I was discussing the same issue here -> #1554

Nuxt has an excellent starter called Nuxt Starter along with Nuxt CLI.
I think this section should write nuxi init -t ui along with nuxi module add ui.

I would like to give an option to those who are new to Nuxt UI (I often use nuxi init -t ui).

I would like to hear @danielroe 's opinion on this.

(I was thinking of adding a section to this document.
So if I am adding nuxi init -t ui, we might want to separate the PRs. 🤔)

[danielroe]

Yes, I think it's a good idea to separate the PRs (or you could open a PR to my branch and we could combine it if you prefer). Apologies for shadowing your idea - it was a good one. 🙏

[benjamincanac]

@danielroe I assume we can remove this section about adding it to nuxt.config.ts, right?

[danielroe]

Yes, we can. Unless you want to mention that you can configure it there.

[shinGangan]

Yes, I think it's a good idea to separate the PRs (or you could open a PR to my branch and we could combine it if you prefer). Apologies for shadowing your idea - it was a good one. 🙏

@danielroe , thanks for the response.

Then I woud like to open a PR on my end later.
(That way this PR will be less complicated and easier to review).