refactor(frontend): migrate from Vite to Nuxt SPA

Replace Vite and Vue Router with Nuxt framework
Update Docker, build scripts, and env vars for Nuxt generate

frontend/pages/event-pokemon/new.vue

@@ -0,0 +1,14 @@
+<script setup lang="ts">
+import PokemonList from '../../src/views/PokemonList.vue';
+
+definePageMeta({
+  name: 'event-pokemon-new',
+  requiredPermission: 'pokemon.create',
+  editorModal: true,
+  seo: { titleKey: 'pages.eventPokemon.newTitle', descriptionKey: 'pages.eventPokemon.editSubtitle', canonicalPath: '/event-pokemon', noindex: true }
+});
+</script>
+
+<template>
+  <PokemonList :event-only="true" />
+</template>