refactor: 将Data到ViewModel的转换由App转移至Server端

- 将逻辑转移到Server端后，简化前端逻辑

server/services/cms/questionService.ts

@@ -0,0 +1,24 @@
+import { toQuestionListView } from '~~/server/mappers/questionMapper';
+
+export const questionService = {
+  async getQuestionList(locale: string) {
+    const query = await loadAssetAsString(
+      'assets/server',
+      'graphql/questionList.graphql'
+    );
+    if (!query) {
+      throw createError({
+        statusCode: 500,
+        message: 'GraphQL query not found',
+      });
+    }
+
+    const data = await directus.query<{ questions: Question[] }>(query, {
+      locale: locale,
+    });
+
+    const questions = data?.questions || [];
+
+    return questions.map((question) => toQuestionListView(question));
+  },
+};