Add workers to servers (#547)

app/Enums/WorkerStatus.php

@@ -0,0 +1,22 @@
+<?php
+
+namespace App\Enums;
+
+final class WorkerStatus
+{
+    const RUNNING = 'running';
+
+    const CREATING = 'creating';
+
+    const DELETING = 'deleting';
+
+    const FAILED = 'failed';
+
+    const STARTING = 'starting';
+
+    const STOPPING = 'stopping';
+
+    const RESTARTING = 'restarting';
+
+    const STOPPED = 'stopped';
+}