feat: multi language support (#254)

* feat: multitranslational support

* - completion of settings page
- completion of sidebar

* sidebar rerendering bug fix

* completion of the lesson navigation & materials page

* completion of the course navigation

* completion of requested languages

* - Implementation of Language Picker
- Rename Bug Fixes

* checkpoint save

* - addition of the language picker to the onboarding.
- addition of the language switcher for the lesson notes.

* merge completion

* initialization of the new branch

* add transition.svelte file

* lesson note bug fix

* feat: add translation migration

* completion of translation

* fix height issue of dropdown

* refactoring

* fix: improve code with LOCALE from db

* finally get it fully functional

* connect with AI

* backward compatibility for lesson note

* preserve old content, when generating AI content

* undo translations in upgrade modal

* fix duplicate key issue from codacy trigger

---------

Co-authored-by: Rotimi Best <[email protected]>

apps/dashboard/src/lib/components/Question/Grade.svelte

@@ -1,5 +1,7 @@
 <script lang="ts">
   import TextField from '$lib/components/Form/TextField.svelte';
+  import { t } from '$lib/utils/functions/translations';
+
   export let gradeMax = 0;
   export let disableGrading = false;
   export let grade: number | undefined;
@@ -8,7 +10,7 @@
 {#if typeof grade !== 'undefined'}
   <div class="flex items-center">
     <TextField
-      placeholder="Points"
+      placeholder={$t('course.navItem.lessons.exercises.new_exercise_modal.points')}
       bind:value={grade}
       type="number"
       className="w-12"