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>

supabase/seed.sql

@@ -54,6 +54,8 @@ INSERT INTO "auth"."identities" ("provider_id", "user_id", "identity_data", "pro
 -- Data for Name: refresh_tokens; Type: TABLE DATA; Schema: auth; Owner: supabase_auth_admin
 --
 
+
+
 --
 -- Data for Name: sso_providers; Type: TABLE DATA; Schema: auth; Owner: supabase_auth_admin
 --