improve inheritance with translations i18n.js files

vue-i18n --> chill main i18n ---( )---> app index
chill bundle i18n --> app i18n --^

src/Bundle/ChillMainBundle/Resources/public/vuejs/_js/i18n.js

@@ -0,0 +1,52 @@
+import { createI18n } from 'vue-i18n'
+
+const datetimeFormats = {
+   fr: {
+      short: {
+         year: "numeric",
+         month: "numeric",
+         day: "numeric"
+      },
+      long: {
+         year: "numeric",
+         month: "short",
+         day: "numeric",
+         weekday: "short",
+         hour: "numeric",
+         minute: "numeric",
+         hour12: false
+      }
+   }
+};
+const messages = {
+   fr: {
+      action: {
+         actions: "Actions",
+         show: "Voir",
+         edit: "Modifier",
+         create: "Créer",
+         remove: "Enlever",
+         delete: "Supprimer",
+         save: "Enregistrer",
+         show_modal: "Ouvrir une modale",
+         ok: "OK",
+         cancel: "Annuler",
+         close: "Fermer",
+         next: "Suivant",
+         previous: "Précédent",
+         back: "Retour"
+      },
+   }
+};
+
+const _createI18n = (appMessages) => {
+   Object.assign(messages.fr, appMessages.fr);
+   return createI18n({
+      datetimeFormats,
+      messages,
+      locale: 'fr',
+      fallbackLocale: 'fr'
+   })
+};
+
+export { _createI18n }