refactor: remove GitHub authentication API endpoints and add new components

- Deleted GitHub callback and authentication handler files.
- Added new component for displaying headlines.
- Implemented hot news feed component with external API fetching.
- Created dynamic news provider page with routing.
- Developed news organization about page with animations and data fetching.
- Introduced a code of conduct document.

components/footer.vue

@@ -6,7 +6,7 @@ const localeLink = useLocalePath();
     class="flex flex-col justify-center align-center text-center absolute inset-x-0"
   >
     <span class="text-sm m-4 mb-0 text-center align-center justify-center"
-      >{{ new Date().getFullYear() }} &copy; yh</span
+      >2025 - {{ new Date().getFullYear() }} &copy; yh</span
     >
     <span class="text-xs mt-0 m-2 text-center align-center justify-center">
       Inspired by Ground.News