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/project/ProjectSidebarDetails.vue

@@ -65,11 +65,11 @@
 </template>
 <script setup lang="ts">
 import { BookTextIcon, CalendarIcon, ExternalIcon, ScaleIcon, VersionIcon } from '@modrinth/assets'
-import { defineMessages, useVIntl } from '@vintl/vintl'
 import dayjs from 'dayjs'
 import { computed } from 'vue'
 
 import { useRelativeTime } from '../../composables'
+import { defineMessages, useVIntl } from '../../composables/i18n'
 
 const { formatMessage } = useVIntl()
 const formatRelativeTime = useRelativeTime()