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/lib/utils/store/user.ts

@@ -1,5 +1,6 @@
 import { writable } from 'svelte/store';
 import type { User } from '@supabase/supabase-js';
+import { LOCALE } from '../types';
 
 interface UserStore {
   openAuthModal: boolean;
@@ -21,6 +22,7 @@ interface ProfileStore {
   goal: string;
   source: string;
   telegram_chat_id: number | null;
+  locale: LOCALE;
   is_email_verified: boolean;
   verified_at: string;
 }
@@ -44,6 +46,7 @@ export const defaultProfileState: ProfileStore = {
   goal: '',
   source: '',
   telegram_chat_id: null,
+  locale: LOCALE.EN,
   is_email_verified: false,
   verified_at: ''
 };