Add S3 and Wasabi as storage providers (#281)

app/StorageProviders/S3StorageInterface.php

@@ -0,0 +1,14 @@
+<?php
+
+namespace App\StorageProviders;
+
+interface S3StorageInterface
+{
+    public function getApiUrl(): string;
+
+    public function setApiUrl(?string $region = null): void;
+
+    public function getBucketRegion(): string;
+
+    public function setBucketRegion(string $region): void;
+}