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 <best@classroomio.com>

apps/dashboard/src/routes/org/[slug]/quiz/[slug]/+page.svelte

@@ -146,10 +146,10 @@
     console.log('data', data);
     console.log('error', error);
     if (error) {
-      snackbar.error("Something's not right - Please try later");
+      snackbar.error('snackbar.course_settings.error.not_right');
       return;
     } else {
-      snackbar.success('Saved Successfully');
+      snackbar.success('snackbar.course_settings.success.saved');
     }
   }