refactor: Use import flow as static flow model method

packages/backend/src/models/flow.js

@@ -9,6 +9,7 @@ import globalVariable from '../helpers/global-variable.js';
 import logger from '../helpers/logger.js';
 import Telemetry from '../helpers/telemetry/index.js';
 import exportFlow from '../helpers/export-flow.js';
+import importFlow from '../helpers/import-flow.js';
 import flowQueue from '../queues/flow.js';
 import {
   REMOVE_AFTER_30_DAYS_OR_150_JOBS,
@@ -39,6 +40,10 @@ class Flow extends Base {
     },
   };
 
+  static async import(user, flowData) {
+    return importFlow(user, flowData);
+  }
+
   static relationMappings = () => ({
     steps: {
       relation: Base.HasManyRelation,