feat: added schemas for openapi (#452)

packages/api/src/schemas/list.ts

@@ -0,0 +1,13 @@
+import { z } from "zod";
+
+// ─── list.create ─────────────────────────────────────────────
+export const listCreateResponseSchema = z.object({
+  publicId: z.string(),
+  name: z.string(),
+});
+
+// ─── list.update / list.reorder ──────────────────────────────
+export const listUpdateResponseSchema = z.object({
+  publicId: z.string(),
+  name: z.string(),
+});