feat(bisaya-course): enhance German course content and localization support

- Updated the create-german-for-bisaya-course-content.js script to improve lesson pattern retrieval by introducing a new function for generating a lesson pattern pool.
- Added new exercises for various topics including 'Wohnung & Nachbarn', 'Besuch empfangen', 'Arzt, Apotheke, Termin', and 'Amt, Dokumente, Anmeldung', enhancing practical language skills for learners.
- Improved localization by integrating translation keys for various UI elements and error messages across multiple components, ensuring a consistent user experience in both German and Bisaya.
- Enhanced the main.js file to recognize Bisaya language preferences in browser settings, improving accessibility for users.

frontend/src/i18n/index.js

@@ -19,6 +19,23 @@ import enBlog from './locales/en/blog.json';
 import enMinigames from './locales/en/minigames.json';
 import enMessage from './locales/en/message.json';
 import enPersonal from './locales/en/personal.json';
+import cebGeneral from './locales/ceb/general.json';
+import cebHeader from './locales/ceb/header.json';
+import cebNavigation from './locales/ceb/navigation.json';
+import cebHome from './locales/ceb/home.json';
+import cebRegister from './locales/ceb/register.json';
+import cebActivate from './locales/ceb/activate.json';
+import cebError from './locales/ceb/error.json';
+import cebMessage from './locales/ceb/message.json';
+import cebSettings from './locales/ceb/settings.json';
+import cebPasswordReset from './locales/ceb/passwordReset.json';
+import cebSocialNetwork from './locales/ceb/socialnetwork.json';
+import cebFriends from './locales/ceb/friends.json';
+import cebChat from './locales/ceb/chat.json';
+import cebPersonal from './locales/ceb/personal.json';
+import cebFalukant from './locales/ceb/falukant.json';
+import cebBlog from './locales/ceb/blog.json';
+import cebMinigames from './locales/ceb/minigames.json';
 
 import deGeneral from './locales/de/general.json';
 import deHeader from './locales/de/header.json'; 
@@ -79,6 +96,43 @@ const messages = {
     ...enMessage,
     ...enPersonal,
   },
+  ceb: {
+    ...enGeneral,
+    ...enHeader,
+    ...enNavigation,
+    ...enHome,
+    ...enChat,
+    ...enRegister,
+    ...enPasswordReset,
+    ...enError,
+    ...enActivate,
+    ...enSettings,
+    ...enAdmin,
+    ...enSocialNetwork,
+    ...enFriends,
+    ...enFalukant,
+    ...enBlog,
+    ...enMinigames,
+    ...enMessage,
+    ...enPersonal,
+    ...cebGeneral,
+    ...cebHeader,
+    ...cebNavigation,
+    ...cebHome,
+    ...cebRegister,
+    ...cebActivate,
+    ...cebError,
+    ...cebMessage,
+    ...cebSettings,
+    ...cebPasswordReset,
+    ...cebSocialNetwork,
+    ...cebFriends,
+    ...cebChat,
+    ...cebPersonal,
+    ...cebFalukant,
+    ...cebBlog,
+    ...cebMinigames,
+  },
   de: {
     'Ok': 'Ok',
     ...deGeneral,