chore(turnier-feature): remove unused ViewModels and UI components

- Removed `AbteilungViewModel`, `BewerbAnlegenViewModel`, `BewerbViewModel`, and `CreateBewerbWizardScreen`.
- Cleaned up related imports and unused domain models.

frontend/features/nennung-feature/build.gradle.kts

@@ -1,3 +1,5 @@
+import org.jetbrains.kotlin.gradle.ExperimentalWasmDsl
+
 /**
  * Feature-Modul: Nennungs-Maske (Desktop-only)
  * Kapselt die gesamte UI und Logik für die Nennungserfassung am Turnier.
@@ -13,11 +15,16 @@ version = "1.0.0"
 
 kotlin {
   jvm()
+  @OptIn(ExperimentalWasmDsl::class)
+  wasmJs {
+    browser()
+  }
 
   sourceSets {
     commonMain.dependencies {
       implementation(projects.frontend.core.designSystem)
       implementation(projects.frontend.core.domain)
+      implementation(libs.kotlinx.datetime)
       implementation(compose.foundation)
       implementation(compose.runtime)
       implementation(compose.material3)