Add S3 and Wasabi as storage providers (#281)

app/SSH/HasS3Storage.php

@@ -0,0 +1,20 @@
+<?php
+
+namespace App\SSH;
+
+trait HasS3Storage
+{
+    private function prepareS3Path(string $path, string $prefix = ''): string
+    {
+        $path = trim($path);
+        $path = ltrim($path, '/');
+        $path = preg_replace('/[^a-zA-Z0-9\-_\.\/]/', '_', $path);
+        $path = preg_replace('/\/+/', '/', $path);
+
+        if ($prefix) {
+            $path = trim($prefix, '/').'/'.$path;
+        }
+
+        return $path;
+    }
+}