feat: allow installing multiple dependencies

[pi0]

🔗 Linked issue

resolves #105

❓ Type of change

• [ ] 📖 Documentation (updates to the documentation, readme, or JSdoc annotations)
• [ ] 🐞 Bug fix (a non-breaking change that fixes an issue)
• [ ] 👌 Enhancement (improving an existing functionality like performance)
• [ ] ✨ 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

Allow installing multiple dependencies using addDependency, addDevDependency and CLI (with a workaround for https://github.com/unjs/citty/issues/115)

📝 Checklist

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

[codecov[bot]]

Codecov Report

Attention: 3 lines in your changes are missing coverage. Please review.

Comparison is base (da4a986) 82.10% compared to head (8c802c0) 82.17%.

Files	Patch %	Lines
src/cli.ts	0.00%	2 Missing :warning:
src/api.ts	83.33%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #107 +/- ## ========================================== + Coverage 82.10% 82.17% +0.06% ========================================== Files 6 6 Lines 514 516 +2 Branches 70 71 +1 ========================================== + Hits 422 424 +2 Misses 91 91 Partials 1 1 ```

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