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

resources/lang/en/pagination.php

@@ -14,6 +14,6 @@ return [
     */
 
     'previous' => '« Previous',
-    'next'     => 'Next »',
+    'next' => 'Next »',
 
 ];