feat: Allow one to use an environment variable instead of the nuxt config for baseURL

[ReaperMaga]

With this change it is possible to use the environment variable AUTH_BASE_URL instead changing it in nuxt.config

🔗 Linked issue

#368

❓ 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

📝 Checklist

• I have linked an issue or discussion.
• I have added tests (if possible).
• I have updated the documentation accordingly.

[zoey-kaiser]

Closing, as we are going to reevaluate the usage of environment variables and configuration options in #751