[#MUI-37] Création d'un composant accordéon (#54)

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## Description de la PR

## Modification du .env

## Check list

- [ ] Pas de régression
- [ ] TU/TI/TF rédigée
- [ ] TU/TI/TF OK
- [ ] CHANGELOG modifié

Reviewed-on: #54
Co-authored-by: tristan <tristan@yuno.malio.fr>
Co-committed-by: tristan <tristan@yuno.malio.fr>

app/components/malio/accordion/context.ts

@@ -0,0 +1,19 @@
+import type {ComputedRef, InjectionKey} from 'vue'
+
+export interface AccordionItemRegistration {
+  value: string
+  getHeaderEl: () => HTMLElement | null
+  isDisabled: () => boolean
+}
+
+export interface AccordionContext {
+  mode: ComputedRef<'single' | 'multiple'>
+  baseId: ComputedRef<string>
+  isOpen: (value: string) => boolean
+  toggle: (value: string) => void
+  register: (item: AccordionItemRegistration, defaultOpen: boolean) => void
+  unregister: (value: string) => void
+  focusSibling: (value: string, offset: 1 | -1) => void
+}
+
+export const accordionContextKey: InjectionKey<AccordionContext> = Symbol('MalioAccordion')