add onboarding and feedback models

dashboard/server/api/onboarding/exist.ts

@@ -0,0 +1,9 @@
+
+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 }
+});