perf: 增加原生缓存

vendor/illuminate/contracts/Filesystem/Cloud.php

@@ -0,0 +1,14 @@
+<?php
+
+namespace Illuminate\Contracts\Filesystem;
+
+interface Cloud extends Filesystem
+{
+    /**
+     * Get the URL for the file at the given path.
+     *
+     * @param  string  $path
+     * @return string
+     */
+    public function url($path);
+}