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/i18n/locales/en/seo.json

@@ -32,6 +32,20 @@
             "jsonLdDescription": "Interactive vocabulary trainer with courses, lessons and exercises for language learning.",
             "jsonLdName": "YourPart vocabulary trainer"
         },
+        "bisayaLearning": {
+            "title": "Learn Bisaya online - Cebuano for beginners | YourPart",
+            "description": "Learn Bisaya online for German-speaking beginners: vocabulary, sentence patterns and everyday phrases for family, travel, health and conversations in the browser.",
+            "keywords": "learn Bisaya, learn Cebuano, Visaya, Bisaya vocabulary, Cebuano beginner, Philippine language, Bisaya German, vocabulary trainer",
+            "jsonLdDescription": "Online course for German-speaking beginners who want to learn Bisaya/Cebuano with everyday phrases and vocabulary practice.",
+            "jsonLdName": "Learn Bisaya for German-speaking beginners"
+        },
+        "germanForBisaya": {
+            "title": "Learn German for Bisaya speakers - A1 everyday German | YourPart",
+            "description": "Practice German online for Cebuano/Bisaya speakers: basic vocabulary, A1-oriented everyday sentences, doctor, work, school, appointments and forms in the browser.",
+            "keywords": "German for Bisaya, German for Cebuano, learn German A1, German vocabulary trainer, learn German online",
+            "jsonLdDescription": "Online course for Cebuano/Bisaya speakers who want to practice German everyday sentences and basic vocabulary.",
+            "jsonLdName": "German for Bisaya speakers"
+        },
         "blogList": {
             "title": "Blogs on YourPart - community posts and topics",
             "description": "Explore public blogs on YourPart with community posts, ideas, experiences and topics from many areas.",