Implement PHP CS Fixer and a coding standard to follow (#471)

* Create PHP CS Fixer config and add to CI workflow

* Run php cs fixer on project

* Add newline at end of file

* Update to use PHP CS Fixer v3

* Run v3 config on project

* Run seperate config in CI

app/Http/Controllers/V1/Update/DownloadUpdateController.php

@@ -24,7 +24,7 @@ class DownloadUpdateController extends Controller
 
         return response()->json([
             'success' => true,
-            'path' => $path
+            'path' => $path,
         ]);
     }
 }