devex: migrate to vue-i18n (#4966)

* sample languages refactor

* feat: consistency + dedupe impl of i18n

* fix: broken imports

* fix: intl formatted component

* fix: use relative imports

* fix: imports

* fix: comment out incomplete locales + fix imports

* feat: cleanup

* fix: ui imports

* fix: lint

* fix: admonition import

* make footer a component, fix language reactivity

* make copyright notice untranslatable

---------

Co-authored-by: Calum H. <contact@cal.engineer>

packages/ui/src/components/servers/backups/BackupItem.vue

@@ -13,10 +13,10 @@ import {
 	UserRoundIcon,
 	XIcon,
 } from '@modrinth/assets'
-import { defineMessages, useVIntl } from '@vintl/vintl'
 import dayjs from 'dayjs'
 import { computed } from 'vue'
 
+import { defineMessages, useVIntl } from '../../../composables/i18n'
 import { commonMessages } from '../../../utils'
 import ButtonStyled from '../../base/ButtonStyled.vue'
 import OverflowMenu, { type Option as OverflowOption } from '../../base/OverflowMenu.vue'