Added chmod perm, modal to change, api with local/ftp/sftp (#399)

Read a fill current permissions for local driver

Finished permissions for ftp driver, read and change

Read permissions for sftp adapter

Created FilegatorFtp for a cleaner permissions integration

Implemented recursive chmod options for files/folders

Modified tests to cover permissions

Lint frontend permissions component

backend/Services/Storage/DirectoryCollection.php

@@ -23,7 +23,7 @@ class DirectoryCollection implements \JsonSerializable
         $this->location = $location;
     }
 
-    public function addFile(string $type, string $path, string $name, int $size, int $timestamp)
+    public function addFile(string $type, string $path, string $name, int $size, int $timestamp, int $permissions)
     {
         if (! in_array($type, ['dir', 'file', 'back'])) {
             throw new \Exception('Invalid file type.');
@@ -35,6 +35,7 @@ class DirectoryCollection implements \JsonSerializable
             'name' => $name,
             'size' => $size,
             'time' => $timestamp,
+            'permissions' => $permissions,
         ]);
     }