feat(storage): 新增S3存储驱动与磁盘配置

extend/think/filesystem/driver/S3.php

@@ -0,0 +1,40 @@
+<?php
+
+namespace think\filesystem\driver;
+
+use Aws\S3\S3Client;
+use League\Flysystem\AwsS3V3\AwsS3V3Adapter;
+use League\Flysystem\FilesystemAdapter;
+use think\filesystem\Driver;
+
+class S3 extends Driver
+{
+    protected function createAdapter(): FilesystemAdapter
+    {
+        $options = [
+            'version' => 'latest',
+            'region' => sysconfig('upload', 's3_region'),
+            'credentials' => [
+                'key' => sysconfig('upload', 's3_access_key'),
+                'secret' => sysconfig('upload', 's3_secret_key'),
+            ],
+        ];
+
+        $endpoint = sysconfig('upload', 's3_endpoint');
+        if (!empty($endpoint)) {
+            $options['endpoint'] = $endpoint;
+            if (sysconfig('upload', 's3_path_style') === '1') {
+                $options['use_path_style_endpoint'] = true;
+            }
+        }
+
+        $client = new S3Client($options);
+
+        return new AwsS3V3Adapter($client, sysconfig('upload', 's3_bucket'));
+    }
+
+    public function url(string $path): string
+    {
+        return $this->concatPathToUrl(sysconfig('upload', 's3_domain'), $path);
+    }
+}