feat(backups): add scheduled persistent volume backups

app/Models/ScheduledVolumeBackupExecution.php

@@ -0,0 +1,43 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+
+class ScheduledVolumeBackupExecution extends BaseModel
+{
+    protected $fillable = [
+        'uuid',
+        'scheduled_volume_backup_id',
+        'status',
+        'message',
+        'size',
+        'filename',
+        'pause_container_ids',
+        'pause_recovery_pending',
+        's3_cleanup_pending',
+        'finished_at',
+        'local_storage_deleted',
+        's3_storage_deleted',
+        's3_uploaded',
+    ];
+
+    protected function casts(): array
+    {
+        return [
+            'size' => 'integer',
+            'finished_at' => 'datetime',
+            'pause_container_ids' => 'array',
+            'pause_recovery_pending' => 'boolean',
+            's3_cleanup_pending' => 'boolean',
+            'local_storage_deleted' => 'boolean',
+            's3_storage_deleted' => 'boolean',
+            's3_uploaded' => 'boolean',
+        ];
+    }
+
+    public function scheduledVolumeBackup(): BelongsTo
+    {
+        return $this->belongsTo(ScheduledVolumeBackup::class);
+    }
+}