chore: updated ESLint and general housekeeping

[zoey-kaiser]

🔗 Linked issue

Closes N/A

❓ 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

This PR:

• Removed old non-flat eslint setup
• Installed Antfu Eslint Config and sets up our usual development rules
• Adds .vscode folder for extensions and settings
• Installs OXLint
• Fixes all issues that the new linters discovered

📝 Checklist

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

[zoey-kaiser]

Note: For some issues I decided to disable the eslint rule for now. The biggest Issue that I did this for was when functions were used before they were defined.

This change would require making them all top-level functions (which I think is a good idea) but sadly we have some helpers (e.g. makeCWN: Make a call with Nuxt function) that makes this a bit more tricky. In addition to this, we also type a lot of functions with their params and returns, which was also tricky to continue using this, while making them top-level functions.

@phoenix-ru, feel free to fix these issues if you would like in this PR or a follow-up PR. However, I think its good to avoid big code changes here and only address minimal changes to avoid any breaking changes!

[zoey-kaiser]

We also disabled all Nuxt Auto-imports. This was done a long time ago, I was wondering if we could maybe re-enable them, as this could reduce the amount of imports (+ incorrect typings) and also make the playgrounds act more like an actual Nuxt App would!

https://github.com/sidebase/nuxt-auth/blob/main/.nuxtrc#L1