refactor: 移除用户应用相关代码和资源文件

清理未使用的用户应用代码、资源文件和配置
更新管理后台的路由和国际化配置

apps/admin/src/views/competition/competition-add/index.vue

@@ -0,0 +1,19 @@
+<script setup lang="ts">
+import { NButton, NSpace } from 'naive-ui'
+</script>
+
+<template>
+  <div class="competition-add">
+    <NSpace vertical>
+      <NButton type="primary">
+        Add Competition
+      </NButton>
+    </NSpace>
+  </div>
+</template>
+
+<style scoped lang="scss">
+.competition-add {
+  padding: 20px;
+}
+</style>

apps/admin/src/views/competition/competition-detail/index.vue

@@ -0,0 +1,5 @@
+<template>
+  <div>
+    <h1>dashboard_detail</h1>
+  </div>
+</template>