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>

apps/frontend/src/components/ui/create-project-version/stages/AddFilesStage.vue

@@ -87,7 +87,13 @@
 
 <script lang="ts" setup>
 import type { Labrinth } from '@modrinth/api-client'
-import { Admonition, DropzoneFileInput, injectProjectPageContext } from '@modrinth/ui'
+import {
+	Admonition,
+	defineMessages,
+	DropzoneFileInput,
+	injectProjectPageContext,
+	useVIntl,
+} from '@modrinth/ui'
 import { acceptFileFromProjectType } from '@modrinth/utils'
 
 import { injectManageVersionContext } from '~/providers/version/manage-version-modal'