Add base support for AWS/Wings backup adapters

config/backups.php

@@ -1,29 +1,39 @@
 <?php
 
+use Pterodactyl\Models\Backup;
+
 return [
     // The backup driver to use for this Panel instance. All client generated server backups
     // will be stored in this location by default. It is possible to change this once backups
     // have been made, without losing data.
-    'driver' => env('APP_BACKUP_DRIVER', 'local'),
+    'default' => env('APP_BACKUP_DRIVER', 'local'),
 
     'disks' => [
         // There is no configuration for the local disk for Wings. That configuration
         // is determined by the Daemon configuration, and not the Panel.
-        'local' => [],
+        'local' => [
+            'adapter' => Backup::ADAPTER_WINGS,
+        ],
 
-        // Configuration for storing backups in Amazon S3.
+        // Configuration for storing backups in Amazon S3. This uses the same credentials
+        // specified in filesystems.php but does include some more specific settings for
+        // backups, notably bucket, location, and use_accelerate_endpoint.
         's3' => [
-            'region' => '',
-            'access_key' => '',
-            'access_secret_key' => '',
+            'adapter' => Backup::ADAPTER_AWS_S3,
+
+            'region' => env('AWS_DEFAULT_REGION'),
+            'key' => env('AWS_ACCESS_KEY_ID'),
+            'secret' => env('AWS_SECRET_ACCESS_KEY'),
 
             // The S3 bucket to use for backups.
-            'bucket' => '',
+            'bucket' => env('AWS_BACKUPS_BUCKET'),
 
             // The location within the S3 bucket where backups will be stored. Backups
             // are stored within a folder using the server's UUID as the name. Each
             // backup for that server lives within that folder.
-            'location' => '',
+            'prefix' => env('AWS_BACKUPS_BUCKET') ?? '',
+
+            'use_accelerate_endpoint' => env('AWS_BACKUPS_USE_ACCELERATE', false),
         ],
     ],
 ];