migrate to "export default"

also, set no-use-before-define in linter

src/scheduler.js

@@ -1,23 +1,16 @@
 import apps from './apps.js';
 import assert from 'node:assert';
 import BoxError from './boxerror.js';
-import * as cloudron from './cloudron.js';
+import cloudron from './cloudron.js';
 import constants from './constants.js';
 import { CronJob } from 'cron';
 import debugModule from 'debug';
-import * as docker from './docker.js';
+import docker from './docker.js';
 import safe from 'safetydance';
-import * as _ from './underscore.js';
+import _ from './underscore.js';
 
 const debug = debugModule('box:scheduler');
 
-export {
-    sync,
-    deleteJobs,
-
-    suspendAppJobs,
-    resumeAppJobs
-};
 
 const gState = {}; // appId -> { containerId, schedulerConfig (manifest+crontab), cronjobs }
 const gSuspendedAppIds = new Set(); // suspended because some apptask is running
@@ -166,3 +159,11 @@ async function sync() {
         gState[app.id] = {  containerId: app.containerId, schedulerConfig, cronJobs };
     }
 }
+
+export default {
+    sync,
+    deleteJobs,
+
+    suspendAppJobs,
+    resumeAppJobs
+};