feat(seo, routing): add Bisaya learning and German for Bisaya courses

- Introduced new routes for Bisaya learning and German for Bisaya courses, enhancing the marketing section of the application.
- Updated sitemap.xml to include new course URLs for better SEO visibility.
- Added localization entries for both courses in English and German, improving content accessibility for users.
- Enhanced SEO metadata generation for the new courses, ensuring proper indexing and visibility in search engines.
- Updated VocabLandingView to feature links to the new courses, improving user navigation and engagement.

frontend/src/router/marketingRoutes.js

@@ -1,6 +1,8 @@
 const FalukantLandingView = () => import('../views/public/FalukantLandingView.vue');
 const MinigamesLandingView = () => import('../views/public/MinigamesLandingView.vue');
 const VocabLandingView = () => import('../views/public/VocabLandingView.vue');
+const BisayaLearningLandingView = () => import('../views/public/BisayaLearningLandingView.vue');
+const GermanForBisayaLandingView = () => import('../views/public/GermanForBisayaLandingView.vue');
 
 const marketingRoutes = [
   {
@@ -36,6 +38,28 @@ const marketingRoutes = [
       },
     },
   },
+  {
+    path: '/bisaya-lernen',
+    name: 'BisayaLearningLanding',
+    component: BisayaLearningLandingView,
+    meta: {
+      seo: {
+        i18nKey: 'bisayaLearning',
+        canonicalPath: '/bisaya-lernen',
+      },
+    },
+  },
+  {
+    path: '/deutsch-fuer-bisaya',
+    name: 'GermanForBisayaLanding',
+    component: GermanForBisayaLandingView,
+    meta: {
+      seo: {
+        i18nKey: 'germanForBisaya',
+        canonicalPath: '/deutsch-fuer-bisaya',
+      },
+    },
+  },
 ];
 
 export default marketingRoutes;