Switch to Nuxt 3 before Nuxt 2 reaches EOL

[rudokemper]

According to the current Nuxt roadmap, Nuxt 2 is set to reach end of life on June 30, 2024.

However, some core Nuxt modules that are important to GCV, like nuxt/auth, have yet to be released. So it seems the timing isn't great to start upgrading GCV to Nuxt 3 as of yet.

For future reference, some things that need to be worked on to get GCV working with Nuxt 3:

• Switch out use of axios for $fetch.
• Update nuxt.config.ts to use the latest syntax.
• Remove any extra config that is no longer needed, like for TypeScript (which is now supported out of the box).
• Use new server/ directory structure for APIs.
• Update middleware syntax, if needed.
• Change filenames for dynamic pages from _id.vue to [id].vue.
• Ensure all of the third party dependencies (like chart.js, turf) will play nicely with Nuxt 3.

[rudokemper]

My read of this thread is that it might not be worthwhile to wait around for nuxt/auth to be released; and instead, try out nuxt-auth-utils which is being recommended by the author of nuxt/auth, receiving a lot of developer love, and seems to be quite simple to implement.

I don't see any reason to delay this work any longer. It'll be good to start with map-packer since that is a less complex Nuxt app.