Move to Vue 3 composition (instead of options)

[raphodn]

Story

In Vue 3 there is two different ways to write code:

• the "old" options API
• the "new" composition API

https://vuejs.org/guide/introduction.html#api-styles

Why

Most of the Vue 3 projects out there are written in composition.
To help newcomers, but also our friend Copilot 🤖 , we should start thinking of migrating to composition API.

How

• personally I've never used composition before. But at work we're doing the switch over the coming months (from Vue 2 options to Vue 3 composition). So a good time to learn and test :)
• component by component ?
  • and take the time to create new components if some are too complex

[TTalex]

Makes me think we could have the same arguments for moving to typescript.

It would help reduce some of the head scratching with variable names / content across components. 😅