Feature/add a11y linter

[VachetVirginie]

Description

Ajout des linters antfu et a11y
https://vue-a11y.github.io/eslint-plugin-vuejs-accessibility

Scenario de test:

1. Supprimer les node_modules
2. Re installer
3. pnpm lint avec le playground ci-dessous

Playground

<template>
  <h1> Accessibility tests </h1>
  <div>
    <h2>Alt-text</h2>
    <div>
      <h3> Succeed </h3>
      <img src="foo" alt="Foo eating a sandwich." />
      <img src="foo" :alt="altText" />
      <img src="foo" alt="" />

      <object aria-label="foo" />
      <object aria-labelledby="id1" />
      <object>Meaningful description</object>
      <object title="An object" />

      <area aria-label="foo" />
      <area aria-labelledby="id1" />
      <area alt="This is descriptive!" />

      <input type="image" alt="This is descriptive!" />
      <input type="image" aria-label="foo" />
      <input type="image" aria-labelledby="id1" />

      <h3> Fail </h3>
      <img src="foo" />
      <img alt />
      <!-- Has no value -->
      <img src="foo" role="presentation" />
      <!-- Avoid ARIA if it can be achieved without -->
      <img src="foo" role="none" />
      <!-- Avoid ARIA if it can be achieved without -->

      <object />
      <area />
      <input type="image" />
    </div>
  </div>
</template>