Add missing references

Author: Nana Axel

src/FireFS/Entities/FileSystemEntity.php

@@ -33,6 +33,7 @@
 namespace ElementaryFramework\FireFS\Entities;
 
 use ElementaryFramework\FireFS\Exceptions\FileSystemEntityNotFoundException;
+use ElementaryFramework\FireFS\FireFS;
 
 /**
  * File System Entity

src/FireFS/FireFS.php

@@ -37,6 +37,8 @@
 use ElementaryFramework\FireFS\Events\FileSystemEntityCreatedEvent;
 use ElementaryFramework\FireFS\Events\FileSystemEntityDeletedEvent;
 use ElementaryFramework\FireFS\Events\FileSystemEntityModifiedEvent;
+use ElementaryFramework\FireFS\Entities\Folder;
+use ElementaryFramework\FireFS\Entities\File;
 
 /**
  * FireFS - Filesystem Manager Class