feat: Implement plan and usage API endpoint

packages/backend/test/factories/usage-data.js

@@ -0,0 +1,15 @@
+import { DateTime } from 'luxon';
+import { createUser } from './user';
+import UsageData from '../../src/models/usage-data.ee.js';
+
+export const createUsageData = async (params = {}) => {
+  params.userId = params?.userId || (await createUser()).id;
+  params.nextResetAt =
+    params?.nextResetAt || DateTime.now().plus({ days: 30 }).toISODate();
+
+  params.consumedTaskCount = params?.consumedTaskCount || 0;
+
+  const usageData = await UsageData.query().insertAndFetch(params);
+
+  return usageData;
+};