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

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Co-authored-by: Rotimi Best <best@classroomio.com>

apps/dashboard/src/lib/components/Courses/index.svelte

@@ -6,11 +6,11 @@
   import { courseMetaDeta } from './store';
   import type { Course } from '$lib/utils/types';
   import { globalStore } from '$lib/utils/store/app';
+  import { t } from '$lib/utils/functions/translations';
 
   export let courses: Course[] = [];
-  export let emptyTitle = 'No Courses Created';
-  export let emptyDescription =
-    'Share your knowledge with the world by creating engaging courses for your students.';
+  export let emptyTitle = $t('courses.lesson_card.empty_title');
+  export let emptyDescription = $t('courses.lesson_card.empty_description');
 
   function calcProgressRate(progressRate?: number, totalLessons?: number): number {
     if (!progressRate || !totalLessons) {