feat(nuxi): stub `--dotenv` for `nuxi dev`, `nuxi preview` & `nuxi build`

[cpreston321]

🔗 Linked issue

Issue: #7646

❓ Type of change

• [ ] 📖 Documentation (updates to the documentation or readme)
• [ ] 🐞 Bug fix (a non-breaking change that fixes an issue)
• [X] 👌 Enhancement (improving an existing functionality like performance)
• [X] ✨ New feature (a non-breaking change that adds functionality)
• [ ] ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

Wanted to help with stubbing out and adding --dotenv to dev, preview and build but for build I would think this would be an override during build but I could not find and overrides so I left build out for now until I can learn the best way to override it.

• nuxi dev
  • [Added] [--dotenv] option - relative to rootDir defaults to rootDir
• nuxi preview
  • [Added] [--dotenv] option - relative to rootDir defaults to rootDir
• nuxi build
  • [Added] [--dotenv] option - relative to rootDir defaults to rootDir

I will update docs once I have more information!

Thanks 💚

📝 Checklist

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

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[pi0]

Nice work! For build command you can pass dotenv option to the loadNuxt.

[cpreston321]

@pi0 Thanks for the response! I added it to nuxi build and updated docs accordingly