feat: Convert factories files to JS

packages/backend/test/factories/flow.js

@@ -0,0 +1,12 @@
+import { createUser } from './user';
+
+export const createFlow = async (params = {}) => {
+  params.userId = params?.userId || (await createUser()).id;
+  params.name = params?.name || 'Name your flow!';
+  params.createdAt = params?.createdAt || new Date().toISOString();
+  params.updatedAt = params?.updatedAt || new Date().toISOString();
+
+  const [flow] = await global.knex.table('flows').insert(params).returning('*');
+
+  return flow;
+};