add onboarding

dashboard/server/api/onboarding/exist.ts

@@ -4,6 +4,8 @@ import { OnboardingModel } from '@schema/OnboardingSchema';
 export default defineEventHandler(async event => {
     const data = await getRequestData(event);
     if (!data) return;
+
     const exist = await OnboardingModel.exists({ user_id: data.user.id });
-    return { exist }
+
+    return { exist: exist != null }
 });