Add docblock to facade

Helps with IDE support

Author: simonhamp

src/Facades/Shell.php

@@ -4,6 +4,12 @@
 
 use Illuminate\Support\Facades\Facade;
 
+/**
+ * @method static void showInFolder(string $path)
+ * @method static string openFile(string $path)
+ * @method static void trashFile(string $path)
+ * @method static void openExternal(string $url)
+ */
 class Shell extends Facade
 {
     protected static function getFacadeAccessor()