feat(ui): add reusable components for FIGMA-based UI system

- Implemented new reusable components including Label, Input, InputOTP, HoverCard, Popover, Pagination, NavigationMenu, Menubar, ScrollArea, Resizable, RadioGroup, and Progress under `docs/06_Frontend/FIGMA/src/app/components/ui/`.
- Enhanced structural organization to improve scalability and maintainability.
- Updated `settings.gradle.kts` to include the new module `frontend:features:nennung-feature`.

Signed-off-by: Stefan Mogeritsch <stefan.mo.co@gmail.com>

frontend/core/navigation/src/commonMain/kotlin/at/mocode/frontend/core/navigation/AppScreen.kt

@@ -13,7 +13,7 @@ sealed class AppScreen(val route: String) {
   data object Profile : AppScreen("/profile")
   data object OrganizerProfile : AppScreen("/organizer/profile")
   data object AuthCallback : AppScreen("/auth/callback")
-
+  data object Nennung : AppScreen("/nennung")
   companion object {
     fun fromRoute(route: String): AppScreen {
       return when (route) {
@@ -26,6 +26,7 @@ sealed class AppScreen(val route: String) {
         "/profile" -> Profile
         "/organizer/profile" -> OrganizerProfile
         "/auth/callback" -> AuthCallback
+        "/nennung" -> Nennung
         else -> Landing // Default fallback
       }
     }