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/billing/ModrinthServersPurchaseModal.vue

@@ -8,10 +8,10 @@ import {
 	SpinnerIcon,
 	XIcon,
 } from '@modrinth/assets'
-import { defineMessage, type MessageDescriptor, useVIntl } from '@vintl/vintl'
 import type Stripe from 'stripe'
 import { computed, nextTick, ref, useTemplateRef, watch } from 'vue'
 
+import { defineMessage, type MessageDescriptor, useVIntl } from '../../composables/i18n'
 import { useStripe } from '../../composables/stripe'
 import { commonMessages } from '../../utils'
 import { ButtonStyled } from '../index'